Your answer would be (18)+(2652)=2670
I = PRT/100
100I = PRT
P= 100I÷RT
P = 100I/RT
Set components equal:

From this we find:

Substitute and solve system:

The point where they intersect is:
If you spin on the spot and go completely around just once and stop, you "did a 360" since you moved in a circle and circles have 360 degrees.
So a 720 would be two complete turns and a 540 would be 1 and a half complete turns.
The number is <em>the amount of degrees they rotated through</em>. What's cool is, snow boarders do this while in mid air as a trick when going over jumps.