functions: add sub mul div divc perc new functions: sqrt: square root of a number pwr: find answers for questions like x^y
calculator v1.0: https://scratch.mit.edu/projects/1389578151/ calculator v2.0: https://scratch.mit.edu/projects/1390259448/ dont go more than 163325259729739128162641473372699408673444105923882862759121946657495740957291474451871926525060154732838896421950133080242843444919540597953600246077432798360652868158019198653011290441373047060853910979171947696877502716158045750827102415465149290535258611273009851200624546233650471844171672121374550116207 or 1.633 x 10^309. or even obtained by the largest way of calculation pwr. 143^143 is the integer limit. Even 144^143 or 143^144 shows limit.if you go more than limit then the answer will be ∞. 30 minutes of my life
