Javascript: Calculate Math using numbers as functions. e.g.: five(plus(three())) => 8

mathfun.js

function plus(x){
  return function(y){
    return y+x;
  };
}

function minus(x){
  return function(y){
    return y-x;
  };
}
function times(x){
  return function(y){
    return y*x;
  };
}

function dividedBy(x){
  return function(y){
    return y/x;
  };
}

function one(fn){
    return fn ? fn.call(void 0, 1) : 1;
}
function two(fn){
  return fn ? fn.call(void 0, 2) : 2;
}
function three(fn){
  return fn ? fn.call(void 0, 3) : 3;
}

function number(num){
  return function(fn){
    return fn ? fn.call(void 0, num) : num;
  };
}

function four(fn){
  return number(4)(fn);
}
function five(fn){
  return number(5)(fn);
}
function six(fn){
  return number(6)(fn);
}
function seven(fn){
  return number(7)(fn);
}
function eight(fn){
  return number(8)(fn);
}
function nine(fn){
  return number(9)(fn);
}

console.log(four(dividedBy(three())));