53159805 divided by 686 
We want to divide 53159805 by 686.

Step 1:
When dividing 5 by 686, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 686

Let's proceed to step 2:
686 can be fit into 53 0 times, resulting in a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Append the next digit (1) from the dividend to 53 and continue with: 531 / 686

Moving on to step 3:
686 can be fit into 531 0 times, resulting in a remainder of 531.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 531 to get 531.
Include the next digit (5) from the dividend after 531, then repeat: 5315 / 686

Moving on to step 4:
686 can be fit into 5315 7 times, resulting in a remainder of 513.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 4802 from 5315, we get 513.
Append the next digit (9) from the dividend to 513 and continue with: 5139 / 686

On to step 5:
If we divide 5139 by 686, we get 7 and a remainder of 337.
The next digit of our result is 7. 
Result so far: 77.0
If we take 4802 away from 5139, we end up with 337.
Bring next digit (8) of the dividend behind the 337 and repeat the process: 3378 / 686

Moving on to step 6:
When dividing 3378 by 686, we get 4 with a remainder of 634.
The next digit of our result is 4. 
Result so far: 774.0
Subtracting 2744 from 3378 leaves us with 634.
Fetch the next digit (0) from the dividend, attach it to 634 and continue: 6340 / 686

Step 7:
The number 686 fits into 6340 9 times, leaving a remainder of 166.
Use 9 as the next digit of our solution. 
Result so far: 7749.0
Deduct 6174 from 6340 and we're left with 166.
Grab the next digit (5) from the dividend, add it to 166, then carry on: 1665 / 686

Moving on to step 8:
686 goes into 1665 2 times with a remainder of 293.
Write down 2 as next digit of the result. 
Result so far: 77492.0
Subtract 1372 from 1665 to get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Moving on to step 9:
The number 686 fits into 2930 4 times, leaving a remainder of 186.
Write down 4 as next digit of the result. 
Result so far: 77492.4
If we subtract 2744 from 2930, we get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Step 10:
686 can be fit into 1860 2 times, resulting in a remainder of 488.
Put 2 as the next digit of the answer. 
Result so far: 77492.42
If we take 1372 away from 1860, we end up with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Step 11:
When dividing 4880 by 686, we get 7 with a remainder of 78.
The number 7 becomes the next digit in our result. 
Result so far: 77492.427
Subtracting 4802 from 4880 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 12:
The number 686 fits into 780 1 times, leaving a remainder of 94.
Put 1 as the next digit of the answer. 
Result so far: 77492.4271
Subtracting 686 from 780 leaves us with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 13:
940 divided by 686 is 1 with a remainder of 254.
Use 1 as the next digit of our solution. 
Result so far: 77492.42711
Deduct 686 from 940 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

In conclusion, the division gives 77492.42711 with a balance of 0.000254.