"Adde thou upright, reserving every tenne, And write the Digits downe all with thy pen, The proofe (for truth I say,) Is to cast nine away. From the particular summes, and severall Reject the Nines; likewise from the totall When figures like in both chance to remaine Clear light of working right shal be your gain; Subtract the lesser from the great, noting the rest. Or ten to borrow, you are ever prest, To pay what borrowed was thinks it no paine, But honesty redounding to your gaine."