Selling Diamonds For Grass

I am selling diamonds for 23 Grass each.
Total Diamonds: 6 Diamond
Grass in exchange for 6 Diamonds - 138
Why is it total 138?
It is 138, because I sell 1 Diamond for 23 Grass.
1 Diamond = 23 Grass
Thank you all for reading.
Reply down if you will buy.

 

Bumpy Bump

 

I did not understand how much you sell the grass for

jk

(free bump for such a nicely explained trade thread)

 

I can do 64 grass for 3 diamonds. I have a few stacks