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:
42 x 42 x 42 x 42 x ... (for a total of 78 times) = 4106243042384879310140367950613755870653055719379685980168227991376262151553767116294895803199204326187456855657871077208489984
Therefore, 42 to the power of 78 is 4106243042384879310140367950613755870653055719379685980168227991376262151553767116294895803199204326187456855657871077208489984.