51686643 ÷ 849 
Let's see how many times 849 fits into 51686643.

Step 1:
849 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 849

Going ahead to step 2:
The number 849 fits into 51 0 times, leaving a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Include the next digit (6) from the dividend after 51, then repeat: 516 / 849

Moving on to step 3:
When dividing 516 by 849, we get 0 with a remainder of 516.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 516 leaves us with 516.
Append the next digit (8) from the dividend to 516 and continue with: 5168 / 849

Step 4:
5168 divided by 849 is 6 with a remainder of 74.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 5094 from 5168 leaves us with 74.
Bring next digit (6) of the dividend behind the 74 and repeat the process: 746 / 849

On to step 5:
746 divided by 849 is 0 with a remainder of 746.
The next digit of our result is 0. 
Result so far: 60.0
If we subtract 0 from 746, we get 746.
Take the next digit (6) from the dividend and append it to 746, then repeat: 7466 / 849

On to step 6:
849 goes into 7466 8 times with a remainder of 674.
The number 8 becomes the next digit in our result. 
Result so far: 608.0
If we take 6792 away from 7466, we end up with 674.
Take the next digit (4) from the dividend and append it to 674, then repeat: 6744 / 849

Advancing to step 7:
When dividing 6744 by 849, we get 7 with a remainder of 801.
The next digit of our result is 7. 
Result so far: 6087.0
Subtracting 5943 from 6744 leaves us with 801.
Bring next digit (3) of the dividend behind the 801 and repeat the process: 8013 / 849

Going ahead to step 8:
8013 divided by 849 is 9 with a remainder of 372.
The next digit of our result is 9. 
Result so far: 60879.0
Deduct 7641 from 8013 and we're left with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 9:
The number 849 fits into 3720 4 times, leaving a remainder of 324.
Use 4 as the next digit of our solution. 
Result so far: 60879.4
Deduct 3396 from 3720 and we're left 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.

On to step 10:
If we divide 3240 by 849, we get 3 and a remainder of 693.
Record the quotient 3 as the next digit in the result. 
Result so far: 60879.43
The remainder is 693 after subtracting 2547 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6930, and continue the process.

Let's proceed to step 11:
6930 divided by 849 is 8 with a remainder of 138.
Use 8 as the next digit of our solution. 
Result so far: 60879.438
The remainder is 138 after subtracting 6792 from 6930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 12:
If we divide 1380 by 849, we get 1 and a remainder of 531.
Write down 1 as next digit of the result. 
Result so far: 60879.4381
If we take 849 away from 1380, we end up with 531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5310, and continue the process.

On to step 13:
849 can be fit into 5310 6 times, resulting in a remainder of 216.
The number 6 becomes the next digit in our result. 
Result so far: 60879.43816
If we subtract 5094 from 5310, we get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 14:
2160 divided by 849 is 2 with a remainder of 462.
Use 2 as the next digit of our solution. 
Result so far: 60879.438162
The remainder is 462 after subtracting 1698 from 2160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Going ahead to step 15:
849 can be fit into 4620 5 times, resulting in a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 60879.4381625
The remainder is 375 after subtracting 4245 from 4620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 16:
If we divide 3750 by 849, we get 4 and a remainder of 354.
Record the quotient 4 as the next digit in the result. 
Result so far: 60879.43816254
Subtract 3396 from 3750 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

The quotient of the division is 60879.43816254, and the remainder is 3.54e-07.