We look at the division of 12860587 by 972 
We want to figure out the number of times 12860587 can be divided by 972.

Step 1:
If we divide 1 by 972, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 972

Moving on to step 2:
972 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 972

Going ahead to step 3:
The number 972 fits into 128 0 times, leaving a remainder of 128.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 128, we end up with 128.
Take the next digit (6) from the dividend and append it to 128, then repeat: 1286 / 972

Step 4:
The number 972 fits into 1286 1 times, leaving a remainder of 314.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 972 from 1286, we get 314.
Bring next digit (0) of the dividend behind the 314 and repeat the process: 3140 / 972

Advancing to step 5:
The number 972 fits into 3140 3 times, leaving a remainder of 224.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we subtract 2916 from 3140, we get 224.
Include the next digit (5) from the dividend after 224, then repeat: 2245 / 972

Moving on to step 6:
When dividing 2245 by 972, we get 2 with a remainder of 301.
Use 2 as the next digit of our solution. 
Result so far: 132.0
If we subtract 1944 from 2245, we get 301.
Grab the next digit (8) from the dividend, add it to 301, then carry on: 3018 / 972

Advancing to step 7:
When dividing 3018 by 972, we get 3 with a remainder of 102.
Record the quotient 3 as the next digit in the result. 
Result so far: 1323.0
If we take 2916 away from 3018, we end up with 102.
Bring next digit (7) of the dividend behind the 102 and repeat the process: 1027 / 972

Going ahead to step 8:
If we divide 1027 by 972, we get 1 and a remainder of 55.
Use 1 as the next digit of our solution. 
Result so far: 13231.0
If we take 972 away from 1027, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 9:
972 can be fit into 550 0 times, resulting in a remainder of 550.
Put 0 as the next digit of the answer. 
Result so far: 13231.0
Deduct 0 from 550 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

On to step 10:
972 goes into 5500 5 times with a remainder of 640.
The number 5 becomes the next digit in our result. 
Result so far: 13231.05
Subtracting 4860 from 5500 leaves us with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Advancing to step 11:
6400 divided by 972 is 6 with a remainder of 568.
Record the quotient 6 as the next digit in the result. 
Result so far: 13231.056
If we subtract 5832 from 6400, we get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Advancing to step 12:
972 goes into 5680 5 times with a remainder of 820.
Use 5 as the next digit of our solution. 
Result so far: 13231.0565
Deduct 4860 from 5680 and we're left with 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8200, and continue the process.

Advancing to step 13:
The number 972 fits into 8200 8 times, leaving a remainder of 424.
Put 8 as the next digit of the answer. 
Result so far: 13231.05658
The remainder is 424 after subtracting 7776 from 8200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Let's proceed to step 14:
972 goes into 4240 4 times with a remainder of 352.
The next digit of our result is 4. 
Result so far: 13231.056584
If we subtract 3888 from 4240, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Moving on to step 15:
When dividing 3520 by 972, we get 3 with a remainder of 604.
The number 3 becomes the next digit in our result. 
Result so far: 13231.0565843
Subtracting 2916 from 3520 leaves us with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Moving on to step 16:
972 can be fit into 6040 6 times, resulting in a remainder of 208.
Use 6 as the next digit of our solution. 
Result so far: 13231.05658436
Deduct 5832 from 6040 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

After the division, we end up with 13231.05658436 and a remainder of 2.08e-07.