subtraction is less than the divisor. The number left is the remainder. So in this example, what remains is a quotient of 485 with a remainder of 16364. The process usually stops here and the answer uses the fractional form . For more accuracy, the cycle is continued to find as many decimal places required. A decimal point is marked after the last digit of the quotient and a zero is appended to the remainder which leaves 163640. The cycle is continued, each time appending a zero to the result after the subtraction. Extracting square roots For extracting the square root, an additional bone is used which is different from the others as it has three columns. The first column has the first nine square numbers, the second has the first nine even numbers, and the last has the numbers 1 to 9. To find the square root of 46785399, its digits are grouped into twos starting from the right so it looks like this: Note: A number with an odd number of digits like 85399 would be grouped as The leftmost group is chosen first, in this case 46. The largest square on the square root bone less than 46 is picked, which is 36 from the sixth row. The first digit of the solution is 6, since the sixth row was chosen. Then, the number in the second column from the sixth row on the square root bone, 12, is set on the board. The value in the first column of the sixth row, 36, is subtracted from 46, which leaves 10. The next group of digits, 78, is added next to 10; this leaves the remainder 1078. At this stage, the board and intermediate calculations should look like this: The numbers in each row are "read", ignoring the second and third columns from the square root bone; these are recorded. (For example, the sixth row is read as: ). Like in multiplication shown before, the numbers are read from right to left and add the diagonal numbers from top-right to left-bottom (; ; ). The largest number less than the current remainder, 1078 (from the eighth row), is found. Like before, 8 is appended to get the next digit of the square root and the value of the eighth row, 1024, is subtracted from the current remainder, 1078, to get 54. The second column of the eighth