Hello, I have a math question

I'm trying to figure out how many buttons I have in a jar, I did some calculations but I'm sure Im off
OK here are the numbers:
Total weight of all buttons: 5.25 lbs (excluding the container)
I couldn't weight one button since they're way too light, so I put 20 buttons together and they weight 0.006 lbs, how many buttons do I have?
I calculated 5.25/0.006x20=17500 < am I correct?
Thank you for your help!

yea
17500/20=875
875*.006=5.25
:)
hope it was helpful

Yes you are