5⁶+⅞-1

To solve the expression 5⁶ + ⅞ - 1, we first need to evaluate the exponents:

5⁶ = 5 * 5 * 5 * 5 * 5 * 5 = 15625

Now we can substitute the values into the expression:

15625 + ⅞ - 1 = 15625 + 0.875 - 1 = 15625 + 0.875 - 1 = 15625.875 - 1 = 15624.875