6, if you have two piles of apples and you have three in each, you have six.
Whatever the exponent is on ten is the amount of spaces the decimal moves.
8. 91.2
9. 6200
10. 6250
11. 8240
12. 304.32
13. 51.234
To be honest none of the answers is correct
12*13*14*15*16 = 524160
Idk how to get this answer actually. It's just my first guess, and it happened to be right.