Ornament Details
129500070000080_0
tailpiece
A method to multiply or divide any number of figures by a like or a less number, so expeditely, that any fifty figures may either be multiplied or divided by any fifty figures, all in one line, in five minutes time. And to facilitate its Practice, A Rule is added, to Multiply as readily by the Reverse, as by the Inverse Order of Multiplication. Invented by Quin Mackenzie-Quin, Esq. At the Eighth Year of his Age.
printed for the author, in Margaret-Street, near Cavendish-Square
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