We're dividing 8488136 by 686 
We're looking to find how many times 686 goes into 8488136.

Step 1:
8 divided by 686 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 686

Let's proceed to step 2:
686 can be fit into 84 0 times, resulting in a remainder of 84.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Append the next digit (8) from the dividend to 84 and continue with: 848 / 686

Going ahead to step 3:
When dividing 848 by 686, we get 1 with a remainder of 162.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 686 from 848, we get 162.
Append the next digit (8) from the dividend to 162 and continue with: 1628 / 686

Step 4:
1628 divided by 686 is 2 with a remainder of 256.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 1372 away from 1628, we end up with 256.
Take the next digit (1) from the dividend and append it to 256, then repeat: 2561 / 686

Step 5:
If we divide 2561 by 686, we get 3 and a remainder of 503.
Use 3 as the next digit of our solution. 
Result so far: 123.0
Subtracting 2058 from 2561 leaves us with 503.
Grab the next digit (3) from the dividend, add it to 503, then carry on: 5033 / 686

Step 6:
When dividing 5033 by 686, we get 7 with a remainder of 231.
Put 7 as the next digit of the answer. 
Result so far: 1237.0
Deduct 4802 from 5033 and we're left with 231.
Bring next digit (6) of the dividend behind the 231 and repeat the process: 2316 / 686

Moving on to step 7:
686 goes into 2316 3 times with a remainder of 258.
Write down 3 as next digit of the result. 
Result so far: 12373.0
The remainder is 258 after subtracting 2058 from 2316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Let's proceed to step 8:
686 goes into 2580 3 times with a remainder of 522.
The next digit of our result is 3. 
Result so far: 12373.3
Deduct 2058 from 2580 and we're left with 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Step 9:
If we divide 5220 by 686, we get 7 and a remainder of 418.
Write down 7 as next digit of the result. 
Result so far: 12373.37
Subtract 4802 from 5220 to get 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Let's proceed to step 10:
4180 divided by 686 is 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 12373.376
Deduct 4116 from 4180 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 11:
When dividing 640 by 686, we get 0 with a remainder of 640.
Write down 0 as next digit of the result. 
Result so far: 12373.376
If we take 0 away from 640, we end up with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 12:
The number 686 fits into 6400 9 times, leaving a remainder of 226.
Write down 9 as next digit of the result. 
Result so far: 12373.37609
If we take 6174 away from 6400, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Let's proceed to step 13:
686 goes into 2260 3 times with a remainder of 202.
Record the quotient 3 as the next digit in the result. 
Result so far: 12373.376093
The remainder is 202 after subtracting 2058 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Moving on to step 14:
686 goes into 2020 2 times with a remainder of 648.
Use 2 as the next digit of our solution. 
Result so far: 12373.3760932
Deduct 1372 from 2020 and we're left with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Moving on to step 15:
686 can be fit into 6480 9 times, resulting in a remainder of 306.
The next digit of our result is 9. 
Result so far: 12373.37609329
If we subtract 6174 from 6480, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

The final result is 12373.37609329 with a remainder of 3.06e-07.