You can put this solution on YOUR website! 4^3 means to raise the number to the fourth power thus:
4*4*4=64
5^6 means raising the number 5 to the sixth power thus:
5*5*5*5*5*5=15,625
6^-2 means raising the number 6 to the negative 2 power thus the answer is a fraction with the numerator=1 & the denominator=6^2 or 6*6=36.
thus the answer is 1/36.