37052421 ÷ 686 
Our goal is to divide 37052421 by 686.

Going ahead to step 1:
686 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 686

Let's proceed to step 2:
If we divide 37 by 686, we get 0 and a remainder of 37.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 37 to get 37.
Bring next digit (0) of the dividend behind the 37 and repeat the process: 370 / 686

On to step 3:
If we divide 370 by 686, we get 0 and a remainder of 370.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 370, we get 370.
Bring next digit (5) of the dividend behind the 370 and repeat the process: 3705 / 686

Moving on to step 4:
The number 686 fits into 3705 5 times, leaving a remainder of 275.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 3430 from 3705, we get 275.
Append the next digit (2) from the dividend to 275 and continue with: 2752 / 686

Step 5:
2752 divided by 686 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 54.0
If we subtract 2744 from 2752, we get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 686

Advancing to step 6:
686 goes into 84 0 times with a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 540.0
Subtract 0 from 84 to get 84.
Grab the next digit (2) from the dividend, add it to 84, then carry on: 842 / 686

Let's proceed to step 7:
The number 686 fits into 842 1 times, leaving a remainder of 156.
Use 1 as the next digit of our solution. 
Result so far: 5401.0
Subtract 686 from 842 to get 156.
Fetch the next digit (1) from the dividend, attach it to 156 and continue: 1561 / 686

Let's proceed to step 8:
The number 686 fits into 1561 2 times, leaving a remainder of 189.
The number 2 becomes the next digit in our result. 
Result so far: 54012.0
If we subtract 1372 from 1561, we get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Going ahead to step 9:
686 goes into 1890 2 times with a remainder of 518.
Write down 2 as next digit of the result. 
Result so far: 54012.2
Deduct 1372 from 1890 and we're left with 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Step 10:
When dividing 5180 by 686, we get 7 with a remainder of 378.
Put 7 as the next digit of the answer. 
Result so far: 54012.27
The remainder is 378 after subtracting 4802 from 5180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Moving on to step 11:
686 can be fit into 3780 5 times, resulting in a remainder of 350.
The number 5 becomes the next digit in our result. 
Result so far: 54012.275
If we subtract 3430 from 3780, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Going ahead to step 12:
When dividing 3500 by 686, we get 5 with a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 54012.2755
If we subtract 3430 from 3500, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

After the division, we end up with 54012.2755 and a remainder of 0.0007.