We're dividing 51131649 by 861 
We're looking to find how many times 861 goes into 51131649.

Going ahead to step 1:
861 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 861

Let's proceed to step 2:
When dividing 51 by 861, we get 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (1) of the dividend behind the 51 and repeat the process: 511 / 861

Moving on to step 3:
511 divided by 861 is 0 with a remainder of 511.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 511, we end up with 511.
Bring next digit (3) of the dividend behind the 511 and repeat the process: 5113 / 861

On to step 4:
If we divide 5113 by 861, we get 5 and a remainder of 808.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 4305 from 5113 to get 808.
Grab the next digit (1) from the dividend, add it to 808, then carry on: 8081 / 861

Moving on to step 5:
861 can be fit into 8081 9 times, resulting in a remainder of 332.
Record the quotient 9 as the next digit in the result. 
Result so far: 59.0
Deduct 7749 from 8081 and we're left with 332.
Bring next digit (6) of the dividend behind the 332 and repeat the process: 3326 / 861

Let's proceed to step 6:
When dividing 3326 by 861, we get 3 with a remainder of 743.
The number 3 becomes the next digit in our result. 
Result so far: 593.0
The remainder is 743 after subtracting 2583 from 3326.
Fetch the next digit (4) from the dividend, attach it to 743 and continue: 7434 / 861

Let's proceed to step 7:
7434 divided by 861 is 8 with a remainder of 546.
Record the quotient 8 as the next digit in the result. 
Result so far: 5938.0
The remainder is 546 after subtracting 6888 from 7434.
Fetch the next digit (9) from the dividend, attach it to 546 and continue: 5469 / 861

On to step 8:
5469 divided by 861 is 6 with a remainder of 303.
The number 6 becomes the next digit in our result. 
Result so far: 59386.0
If we take 5166 away from 5469, we end up with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Going ahead to step 9:
3030 divided by 861 is 3 with a remainder of 447.
Put 3 as the next digit of the answer. 
Result so far: 59386.3
The remainder is 447 after subtracting 2583 from 3030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Advancing to step 10:
If we divide 4470 by 861, we get 5 and a remainder of 165.
The next digit of our result is 5. 
Result so far: 59386.35
If we take 4305 away from 4470, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 11:
If we divide 1650 by 861, we get 1 and a remainder of 789.
Record the quotient 1 as the next digit in the result. 
Result so far: 59386.351
If we take 861 away from 1650, we end up with 789.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7890, and continue the process.

Step 12:
7890 divided by 861 is 9 with a remainder of 141.
Write down 9 as next digit of the result. 
Result so far: 59386.3519
The remainder is 141 after subtracting 7749 from 7890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

On to step 13:
861 goes into 1410 1 times with a remainder of 549.
The number 1 becomes the next digit in our result. 
Result so far: 59386.35191
Subtracting 861 from 1410 leaves us with 549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5490, and continue the process.

Advancing to step 14:
When dividing 5490 by 861, we get 6 with a remainder of 324.
Write down 6 as next digit of the result. 
Result so far: 59386.351916
If we take 5166 away from 5490, we end up with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Step 15:
861 goes into 3240 3 times with a remainder of 657.
Write down 3 as next digit of the result. 
Result so far: 59386.3519163
Subtract 2583 from 3240 to get 657.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6570, and continue the process.

On to step 16:
If we divide 6570 by 861, we get 7 and a remainder of 543.
Use 7 as the next digit of our solution. 
Result so far: 59386.35191637
If we take 6027 away from 6570, we end up with 543.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5430, and continue the process.

Our division results in 59386.35191637 with a remaining 5.43e-07.