How many pieces per metric ton for the galvanized corrugated sheet in 0.20mm*900mm?

For the galvanized corrugated steel sheet in 0.20mm*900mm.

900mm is the width after corrugation, generally, the most of clients need the length in 1800mm, 2440mm, 3000mm or 3600mm etc

0.20mm*900mm*1800mm          about 353 pieces per metric ton

0.20mm*900mm*2440mm          about 261 pieces per metric ton

0.20mm*900mm*3600mm          about 176 pieces per metric ton