ANSWER the MATH problem if you love yo mama (ill give brainliest)

Which of the following is the result of expanding

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.