We divide 31209563 by 39
We want to figure out the number of times 31209563 can be divided by 39.

Let's proceed to step 1:
When dividing 3 by 39, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 39

On to step 2:
39 can be fit into 31 0 times, resulting in a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Grab the next digit (2) from the dividend, add it to 31, then carry on: 312 / 39

Going ahead to step 3:
When dividing 312 by 39, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 0 after subtracting 312 from 312.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 39

Advancing to step 4:
0 divided by 39 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 80.0
Subtract 0 from 0 to get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 39

On to step 5:
39 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 800.0
Subtract 0 from 9 to get 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 39

Advancing to step 6:
When dividing 95 by 39, we get 2 with a remainder of 17.
Record the quotient 2 as the next digit in the result. 
Result so far: 8002.0
If we take 78 away from 95, we end up with 17.
Fetch the next digit (6) from the dividend, attach it to 17 and continue: 176 / 39

Let's proceed to step 7:
176 divided by 39 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 80024.0
Subtract 156 from 176 to get 20.
Take the next digit (3) from the dividend and append it to 20, then repeat: 203 / 39

On to step 8:
203 divided by 39 is 5 with a remainder of 8.
Write down 5 as next digit of the result. 
Result so far: 800245.0
Subtract 195 from 203 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
80 divided by 39 is 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 800245.2
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
39 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 800245.2
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
39 can be fit into 200 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 800245.205
Deduct 195 from 200 and we're left 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.

Advancing to step 12:
50 divided by 39 is 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 800245.2051
If we take 39 away from 50, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 13:
39 can be fit into 110 2 times, resulting in a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 800245.20512
The remainder is 32 after subtracting 78 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 14:
When dividing 320 by 39, we get 8 with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 800245.205128
Subtract 312 from 320 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 15:
The number 39 fits into 80 2 times, leaving a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 800245.2051282
If we take 78 away from 80, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 16:
The number 39 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 800245.2051282
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 800245.2051282 with a remainder of 2e-08.