Let's divide 15838364 by 861
Our goal is to divide 15838364 by 861.

On to step 1:
1 divided by 861 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 861

Let's proceed to step 2:
861 can be fit into 15 0 times, resulting in a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 861

On to step 3:
861 goes into 158 0 times with a remainder of 158.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 158 and we're left with 158.
Take the next digit (3) from the dividend and append it to 158, then repeat: 1583 / 861

Going ahead to step 4:
861 can be fit into 1583 1 times, resulting in a remainder of 722.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 861 from 1583, we get 722.
Bring next digit (8) of the dividend behind the 722 and repeat the process: 7228 / 861

Step 5:
If we divide 7228 by 861, we get 8 and a remainder of 340.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 6888 from 7228 and we're left with 340.
Take the next digit (3) from the dividend and append it to 340, then repeat: 3403 / 861

Going ahead to step 6:
If we divide 3403 by 861, we get 3 and a remainder of 820.
Use 3 as the next digit of our solution. 
Result so far: 183.0
Subtracting 2583 from 3403 leaves us with 820.
Append the next digit (6) from the dividend to 820 and continue with: 8206 / 861

Moving on to step 7:
861 goes into 8206 9 times with a remainder of 457.
Record the quotient 9 as the next digit in the result. 
Result so far: 1839.0
Subtract 7749 from 8206 to get 457.
Bring next digit (4) of the dividend behind the 457 and repeat the process: 4574 / 861

Going ahead to step 8:
If we divide 4574 by 861, we get 5 and a remainder of 269.
Put 5 as the next digit of the answer. 
Result so far: 18395.0
If we take 4305 away from 4574, we end up with 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Step 9:
The number 861 fits into 2690 3 times, leaving a remainder of 107.
Record the quotient 3 as the next digit in the result. 
Result so far: 18395.3
If we subtract 2583 from 2690, we get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 10:
861 goes into 1070 1 times with a remainder of 209.
Use 1 as the next digit of our solution. 
Result so far: 18395.31
The remainder is 209 after subtracting 861 from 1070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Step 11:
The number 861 fits into 2090 2 times, leaving a remainder of 368.
Use 2 as the next digit of our solution. 
Result so far: 18395.312
Subtract 1722 from 2090 to get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 12:
When dividing 3680 by 861, we get 4 with a remainder of 236.
The number 4 becomes the next digit in our result. 
Result so far: 18395.3124
Deduct 3444 from 3680 and we're left with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Step 13:
When dividing 2360 by 861, we get 2 with a remainder of 638.
Write down 2 as next digit of the result. 
Result so far: 18395.31242
The remainder is 638 after subtracting 1722 from 2360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

Going ahead to step 14:
6380 divided by 861 is 7 with a remainder of 353.
Put 7 as the next digit of the answer. 
Result so far: 18395.312427
If we take 6027 away from 6380, we end up with 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Going ahead to step 15:
861 can be fit into 3530 4 times, resulting in a remainder of 86.
The number 4 becomes the next digit in our result. 
Result so far: 18395.3124274
If we subtract 3444 from 3530, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 16:
If we divide 860 by 861, we get 0 and a remainder of 860.
The number 0 becomes the next digit in our result. 
Result so far: 18395.3124274
Deduct 0 from 860 and we're left with 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8600, and continue the process.

The final outcome is 18395.3124274, with a leftover of 8.6e-07.