let's do math but with jQuery

adding-in-javascript.jquery.js

(function($) {
  $.fn.add = function(sep = " = ") {
    (function($this) {
      const re = /([0-9]+)/g;
      const n1 = re.exec($this.text());
      const n2 = re.exec($this.text());
      if ((n1 && n2) === null) return function(){};
      const a = parseInt(n1[0]);
      const b = parseInt(n2[0]);
  
      const y = b;
      var n = 0;
      let o, G, u, R = 0;
      var Q = false;
      return () =>
        (function(x) {
          var e = [].forEach(function() {
            return Object.assign({}, { j: 7, c: Math.random() * this.j });
          });
          return {
            func: function() {
              const { v } = this;
  
              let F = null,
                B = 0,
                d = null;
              function bar(q) {
                o = Math.pow;
                return foo(q).k + F();
              }
  
              const foo = (t = (G) ? G : () => {}) => {
                return ((z, s = 9) => {
                  this.q = z;
                  F = () =>
                    b - ((p = b, j = 1) => {
                      n = (a > 0) ?  
                        Math.pow(a, !+[]+!+[] - !![]) : 
                        ((a === 0) ? 0 : -a);
  
                      e = function(W) {
                        let r = 0;
                        if (b > 0) {
                          r = o(b, 4) / o(b, 4) - W - 2;
                        } else if (b === 0) {
                          r = -W + o(b, 4) - o(b, 4) - 1;
                        } else if (b < 0) {
                          r = -(o(b, 4) / o(b, 4)) - W;
                        }
                        return r + W;
                      };
  
                      d = (lmnop, abcde = lmnop) => {
                        if (lmnop <= 1 && lmnop >= -1) {
                          return abcde;
                        }
                        return d((abcde < 0) ? abcde + 1 : abcde - 1);
                      };
                      G = t;
                      t();
                      return (j = p + 4 + (!!{} - Math.pow(256 / 1024, -1))); 
                    })(z, u);
                  return this;
                })(y);
                u = a;
              };
  
              function biz() {
                let w = n;
                let H = (a === 1) ? b + 2 : 0;
  
  
                if (bar(function() { if (Q) { B = u; Q = true; } })) {
                  const E = bar() + d(((y === 0 || y === 1) ? 12 : y), 12); 
                  const J = -e(B) + y + R;
                  H = E + J;
                } 
  
                return H + w - 1;
              }
  
              $this.append(sep + biz());
            },
            k: a + a - b - a + b,
            v: Math.pow(2, 4)
          }['func']();
        })(a);
    })($(this))();
  }
}(jQuery));