We look at the division of 63698143 by 509 
We want to divide 63698143 by 509.

Let's proceed to step 1:
6 divided by 509 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 509

Step 2:
509 can be fit into 63 0 times, resulting in a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Take the next digit (6) from the dividend and append it to 63, then repeat: 636 / 509

Let's proceed to step 3:
509 can be fit into 636 1 times, resulting in a remainder of 127.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 509 away from 636, we end up with 127.
Include the next digit (9) from the dividend after 127, then repeat: 1279 / 509

Moving on to step 4:
If we divide 1279 by 509, we get 2 and a remainder of 261.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 1018 from 1279, we get 261.
Grab the next digit (8) from the dividend, add it to 261, then carry on: 2618 / 509

Going ahead to step 5:
The number 509 fits into 2618 5 times, leaving a remainder of 73.
The number 5 becomes the next digit in our result. 
Result so far: 125.0
Subtract 2545 from 2618 to get 73.
Grab the next digit (1) from the dividend, add it to 73, then carry on: 731 / 509

On to step 6:
If we divide 731 by 509, we get 1 and a remainder of 222.
The number 1 becomes the next digit in our result. 
Result so far: 1251.0
Subtract 509 from 731 to get 222.
Bring next digit (4) of the dividend behind the 222 and repeat the process: 2224 / 509

Going ahead to step 7:
The number 509 fits into 2224 4 times, leaving a remainder of 188.
The next digit of our result is 4. 
Result so far: 12514.0
If we take 2036 away from 2224, we end up with 188.
Append the next digit (3) from the dividend to 188 and continue with: 1883 / 509

Going ahead to step 8:
509 can be fit into 1883 3 times, resulting in a remainder of 356.
Use 3 as the next digit of our solution. 
Result so far: 125143.0
Subtracting 1527 from 1883 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Advancing to step 9:
509 goes into 3560 6 times with a remainder of 506.
Record the quotient 6 as the next digit in the result. 
Result so far: 125143.6
Subtracting 3054 from 3560 leaves us with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Moving on to step 10:
5060 divided by 509 is 9 with a remainder of 479.
Put 9 as the next digit of the answer. 
Result so far: 125143.69
Subtracting 4581 from 5060 leaves us with 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Step 11:
509 goes into 4790 9 times with a remainder of 209.
Put 9 as the next digit of the answer. 
Result so far: 125143.699
The remainder is 209 after subtracting 4581 from 4790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

The final result is 125143.699 with a remainder of 0.0209.