683440 ÷ 53 
Our goal is to divide 683440 by 53.

Step 1:
6 divided by 53 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 53

Step 2:
53 goes into 68 1 times with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 53 from 68, we get 15.
Grab the next digit (3) from the dividend, add it to 15, then carry on: 153 / 53

Advancing to step 3:
153 divided by 53 is 2 with a remainder of 47.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 106 from 153 to get 47.
Append the next digit (4) from the dividend to 47 and continue with: 474 / 53

Advancing to step 4:
When dividing 474 by 53, we get 8 with a remainder of 50.
Write down 8 as next digit of the result. 
Result so far: 128.0
If we subtract 424 from 474, we get 50.
Take the next digit (4) from the dividend and append it to 50, then repeat: 504 / 53

Let's proceed to step 5:
When dividing 504 by 53, we get 9 with a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 1289.0
The remainder is 27 after subtracting 477 from 504.
Append the next digit (0) from the dividend to 27 and continue with: 270 / 53

On to step 6:
When dividing 270 by 53, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 12895.0
Subtracting 265 from 270 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
When dividing 50 by 53, we get 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 12895.0
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
When dividing 500 by 53, we get 9 with a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 12895.09
Subtract 477 from 500 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 9:
230 divided by 53 is 4 with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 12895.094
Subtracting 212 from 230 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
180 divided by 53 is 3 with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 12895.0943
If we take 159 away from 180, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 11:
The number 53 fits into 210 3 times, leaving a remainder of 51.
Record the quotient 3 as the next digit in the result. 
Result so far: 12895.09433
Deduct 159 from 210 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

The final outcome is 12895.09433, with a leftover of 5.1e-05.