Use an idealised paper model: a starting sheet has 1 fat layers, length 840 mm, width 300 mm and thickness 8 mm. A letter fold multiplies layer count by 3; a book fold by 4. Perform 2 letter folds and one book fold. After all folding, roll to the original width and final thickness 4 mm. Ignore trimming, compression and volume loss.
Calculate the complete 75 mm long strips if cutting along the final length. Keep intermediate values unrounded; round the final answer to 4 decimal places if needed.
