13994888 ÷ 686 
We're looking to find how many times 686 goes into 13994888.

Going ahead to step 1:
If we divide 1 by 686, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 686

Advancing to step 2:
If we divide 13 by 686, we get 0 and a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 686

Let's proceed to step 3:
139 divided by 686 is 0 with a remainder of 139.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 139, we end up with 139.
Bring next digit (9) of the dividend behind the 139 and repeat the process: 1399 / 686

Going ahead to step 4:
If we divide 1399 by 686, we get 2 and a remainder of 27.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1372 from 1399 to get 27.
Bring next digit (4) of the dividend behind the 27 and repeat the process: 274 / 686

Advancing to step 5:
When dividing 274 by 686, we get 0 with a remainder of 274.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtracting 0 from 274 leaves us with 274.
Bring next digit (8) of the dividend behind the 274 and repeat the process: 2748 / 686

Step 6:
686 goes into 2748 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 204.0
Subtract 2744 from 2748 to get 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 686

Advancing to step 7:
48 divided by 686 is 0 with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 2040.0
If we subtract 0 from 48, we get 48.
Grab the next digit (8) from the dividend, add it to 48, then carry on: 488 / 686

On to step 8:
If we divide 488 by 686, we get 0 and a remainder of 488.
Put 0 as the next digit of the answer. 
Result so far: 20400.0
The remainder is 488 after subtracting 0 from 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Let's proceed to step 9:
4880 divided by 686 is 7 with a remainder of 78.
Use 7 as the next digit of our solution. 
Result so far: 20400.7
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.

Moving on to step 10:
The number 686 fits into 780 1 times, leaving a remainder of 94.
Use 1 as the next digit of our solution. 
Result so far: 20400.71
If we take 686 away from 780, we end up 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.

Let's proceed to step 11:
The number 686 fits into 940 1 times, leaving a remainder of 254.
The number 1 becomes the next digit in our result. 
Result so far: 20400.711
The remainder is 254 after subtracting 686 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

The final outcome is 20400.711, with a leftover of 0.0254.