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Napier's bones
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===Multiplication by a larger single-digit number=== When multiplying by larger single digits, it is common that upon adding a diagonal column, the sum of the numbers results in a number that is 10 or greater. The second example computes {{nowrap|6785 Γ 8}}. Like Example 1, the corresponding bones to the biggest number are placed in the board. For this example, bones 6, 7, 8, and 5 were placed in the proper order as shown below. [[File:Napier's Bones ex 2 pic 1.png|center|175px|First step of solving 6785 Γ 8]] In the first column, the number by which the biggest number is multiplied by is located. In this example, the number was 8. Only row 8 will be used for the remaining calculations, so the rest of the board has been cleared for clarity in explaining the remaining steps. [[File:Napier's Bones ex 2 pic 2.png|center|375px|Second step of solving 6785 Γ 8]] Just as before, each diagonal column is evaluated, starting at the right side. If the sum of a diagonal column equals 10 or greater, the "tens" place of this sum must be carried over and added along with the numbers in the adjacent left column as demonstrated below. [[File:Napier's Bones ex 2 pic 3.png|center|250px|Third step of solving 6785 Γ 8]] After each diagonal column is evaluated, the calculated numbers are read from left to right to produce a final answer; in this example, 54280 was produced. Therefore: The solution to multiplying 6785 by 8 is 54280.
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