I'm attempting to calculate the value that is m3 but i don't know how the person got these values.

The first row first column is 22mm(width) x 100mm(height) .. then the bold in the second column is 2.7metres(length). How does the person get the m3 value?
ppp stands for pieces per pack.
I converted the length to mm, so i did 22mm x 100mm x 2700mm and the 5940000 and this is wher ei get stuck.
Well, first of all, you want cubic meters, not cubic millimeters, so instead of converting the length to millimeters, you should convert the width and height to meters. That gives you: $$0.022\text{ m}\times0.100\text{ m}\times2.7\text{ m}=0.00594\text{ m}^3$$ This is the volume for one piece. Multiplying this by the number of pieces per pack gives $2.57202\text{ m}^3,$ which yields $2.572$ by rounding.