Complex sentence: From this position the decimal point simply drops down the vertical line and'falls' into the answer.o used in the 1202 Liber Abaci and 800 AD Islamic mathematics and known under the name of lattice multiplication.
Split into simpler sentences: From this position the decimal point simply drops down the vertical line and'falls' into the answer. The form of multiplication was also used in the 1202 Liber Abaci and 800 AD Islamic mathematics and known under the name of lattice multiplication.