Today I worked 6 hours [I Want To Be Better At Math]

I assembled 10 pieces in 3hrs 25min. Or 205 minutes.

10 pieces ÷ 205min = 0.0487804

Soo how many pieces did I do per hour?

If i would have done 10 pieces in 5 hours then the answer would be 2 pieces per hour because 10 ÷ 5hrs. = 2.