calculator answer with alternate option

[bridgway91]

I completed the challenge: 5 I feel good about my code: 4 Feels a bit weird that answers to above are same as example, but sticking with it. Wasn't sure how in-depth to go with the calculator, whether it should be super-basic or kited-out with a bunch of extra functions. Started with the alternate option while following a tutorial vid, but wanted something closer to the picture given in the assignment, so started over to make it more similar (just added in an additional clear button).