 Looking both those values up on the table yields 36 and 9, the difference of which is 27, which is the product of 9 and 3.Antoine Voisin published a table of quarter squares from 1 to 1000 in 1817 as an aid in multiplication.A larger table of quarter squares from 1 to 100000 was published by Samuel Laundy in 1856, and a table from 1 to 200000 by Joseph Blater in 1888.