We look at the division of 50918940 by 686 
We want to figure out the number of times 50918940 can be divided by 686.

Advancing to step 1:
5 divided by 686 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 686

Moving on to step 2:
The number 686 fits into 50 0 times, leaving a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 50 and we're left with 50.
Append the next digit (9) from the dividend to 50 and continue with: 509 / 686

Step 3:
The number 686 fits into 509 0 times, leaving a remainder of 509.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 509, we get 509.
Take the next digit (1) from the dividend and append it to 509, then repeat: 5091 / 686

On to step 4:
686 goes into 5091 7 times with a remainder of 289.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 4802 away from 5091, we end up with 289.
Append the next digit (8) from the dividend to 289 and continue with: 2898 / 686

Moving on to step 5:
2898 divided by 686 is 4 with a remainder of 154.
Write down 4 as next digit of the result. 
Result so far: 74.0
Deduct 2744 from 2898 and we're left with 154.
Grab the next digit (9) from the dividend, add it to 154, then carry on: 1549 / 686

Let's proceed to step 6:
The number 686 fits into 1549 2 times, leaving a remainder of 177.
The next digit of our result is 2. 
Result so far: 742.0
If we take 1372 away from 1549, we end up with 177.
Take the next digit (4) from the dividend and append it to 177, then repeat: 1774 / 686

Moving on to step 7:
686 goes into 1774 2 times with a remainder of 402.
Use 2 as the next digit of our solution. 
Result so far: 7422.0
Deduct 1372 from 1774 and we're left with 402.
Take the next digit (0) from the dividend and append it to 402, then repeat: 4020 / 686

On to step 8:
4020 divided by 686 is 5 with a remainder of 590.
The number 5 becomes the next digit in our result. 
Result so far: 74225.0
Deduct 3430 from 4020 and we're left with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Moving on to step 9:
686 goes into 5900 8 times with a remainder of 412.
Put 8 as the next digit of the answer. 
Result so far: 74225.8
Deduct 5488 from 5900 and we're left with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Step 10:
If we divide 4120 by 686, we get 6 and a remainder of 4.
The next digit of our result is 6. 
Result so far: 74225.86
Subtract 4116 from 4120 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 11:
686 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 74225.86
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
400 divided by 686 is 0 with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 74225.86
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Our division results in 74225.86 with a remaining 0.004.