The first step a math tutor would suggest is to understand what it means when a number has an exponent. The “power” of a number indicates how many times the base would be multiplied by itself to reach the correct value.
The second step is to write the number in the base-exponent form, and lastly calculate what the final result would be. Consider the example of 2 to the power of 4: in exponent form that would be
So re-applying these steps to our particular problem, we first convert our word problem to a base-exponent form of:
To simplify this, all that is needed is to multiply it out:
79 x 79 x 79 x 79 x ... (for a total of 90 times) = 611558794824264093062717970038851169116838573558116193643991686060310753908434669054411246109088255001870444152710319186283548699448381702700259307562767620469730595864801
Therefore, 79 to the power of 90 is 611558794824264093062717970038851169116838573558116193643991686060310753908434669054411246109088255001870444152710319186283548699448381702700259307562767620469730595864801.