How do I set a value as a parameter inside an object with plain javascript?

Consider

a = {apple: "the value of this is ${value}"}

I want to call on this such that

a = {apple: "the value of this is ${value}"}
console.log(a.apple("16")) => outputs "the value of this is 16"

Anyway to do this in javascript?

const a = {
  _apple: "the value of this is ",
  set apple(value){ 
      this._apple = this._apple + value;
    }
};

a.apple = '16';

console.log(a._apple);   

const a = { apple: (value) => `the value of this is ${value}` }