The answer is 60
The multiplication problem 6x10 is 60, 8x10 is 80, and 9x10 is 90.
60
6x10-6
6x10^-6
6*1015 = 6,000,000,000,000,000
60,000,000
0.00006 or 6x10-5
6x10 to the power of 7
6x10^7 60,000,000
6x10+3x1+7x1/10
600 in scientific notation is 6x10^2