Basically what you do is (the ^ arrow meaning exponent)
You take 3.7 + 4.45 x 10^20
Then 8.15 x 10^20, remove the decimal of 8.15 = 815 x 10^-2 x 10^20
815 x 10^18 = <span>815000000000000000000</span>
C, a²+b²=c²
why does this have to be 20 characters long
The constant is -12. I think of constant as the "lonely little number".... Hope this helped =)