This book was first published in 1657. In this etext the character ſ (long-form s) has been replaced by the modern s, and the character vv has been replaced by w. Several pages have examples of long division showing some numbers with strikethrough (Unicode combining Short Stroke Overlay). On this device the number 123 for example, with strikethrough, will display as: 1̸2̸3̸…
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