This looks like a case for decimal floating point, not fractionals. In Python: >>> from decimal import Decimal as D >>> D("10")/D("3") * D("9")/D("4") Decimal(

This looks like a case for decimal floating point, not fractionals. In Python: >>> from decimal import Decimal as D >>> D("10")/D("3") * D("9")/D("4") Decimal('7.50000000000000000000000000')