let theObj = {
    total:  65,
    increment: 1
}
// clone object
const cloneObj = function(obj){
    return JSON.parse(JSON.stringify(obj));
  
};


const incrementTotal = function(obj, val){
    let newObj = cloneObj(obj);
    newObj.increment = val;
    return function(){
        console.log(newObj.total+" Before increment");
        newObj.total = newObj.total + newObj.increment;
        console.log(newObj.total+" After increment");

    };
};

const incBy2 = incrementTotal(theObj, 2); // it will increment by 2
const incBy10 = incrementTotal(theObj, 10); // it will increment by 10
const incBy25 = incrementTotal(theObj, 25); // it will increment by 25
const incBy125 = incrementTotal(theObj, 25); // it will increment by 125
//and so on