The quotient of 8.4 x 10^9 and a number n results in 5.6x10^27 what is the value of n?

Anyone know? will mark brainliest if you're correct!

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.