We look at the division of 23317990 by 402 
Let's see how many times 402 fits into 23317990.

Step 1:
The number 402 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 402

Step 2:
When dividing 23 by 402, we get 0 with a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Append the next digit (3) from the dividend to 23 and continue with: 233 / 402

On to step 3:
The number 402 fits into 233 0 times, leaving a remainder of 233.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 233 after subtracting 0 from 233.
Bring next digit (1) of the dividend behind the 233 and repeat the process: 2331 / 402

Moving on to step 4:
402 goes into 2331 5 times with a remainder of 321.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 2010 from 2331, we get 321.
Grab the next digit (7) from the dividend, add it to 321, then carry on: 3217 / 402

Going ahead to step 5:
402 goes into 3217 8 times with a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 58.0
The remainder is 1 after subtracting 3216 from 3217.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 402

Advancing to step 6:
402 can be fit into 19 0 times, resulting in a remainder of 19.
The next digit of our result is 0. 
Result so far: 580.0
If we subtract 0 from 19, we get 19.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 402

Advancing to step 7:
If we divide 199 by 402, we get 0 and a remainder of 199.
The next digit of our result is 0. 
Result so far: 5800.0
The remainder is 199 after subtracting 0 from 199.
Include the next digit (0) from the dividend after 199, then repeat: 1990 / 402

Step 8:
The number 402 fits into 1990 4 times, leaving a remainder of 382.
Record the quotient 4 as the next digit in the result. 
Result so far: 58004.0
Subtract 1608 from 1990 to get 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Moving on to step 9:
When dividing 3820 by 402, we get 9 with a remainder of 202.
Write down 9 as next digit of the result. 
Result so far: 58004.9
Deduct 3618 from 3820 and we're left with 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Let's proceed to step 10:
2020 divided by 402 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 58004.95
Subtract 2010 from 2020 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
When dividing 100 by 402, we get 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 58004.95
If we take 0 away from 100, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 12:
If we divide 1000 by 402, we get 2 and a remainder of 196.
Use 2 as the next digit of our solution. 
Result so far: 58004.9502
If we take 804 away from 1000, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Let's proceed to step 13:
The number 402 fits into 1960 4 times, leaving a remainder of 352.
Put 4 as the next digit of the answer. 
Result so far: 58004.95024
If we subtract 1608 from 1960, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Let's proceed to step 14:
The number 402 fits into 3520 8 times, leaving a remainder of 304.
Write down 8 as next digit of the result. 
Result so far: 58004.950248
Deduct 3216 from 3520 and we're left with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Let's proceed to step 15:
The number 402 fits into 3040 7 times, leaving a remainder of 226.
The next digit of our result is 7. 
Result so far: 58004.9502487
If we take 2814 away from 3040, 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.

Step 16:
The number 402 fits into 2260 5 times, leaving a remainder of 250.
Write down 5 as next digit of the result. 
Result so far: 58004.95024875
The remainder is 250 after subtracting 2010 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

The final outcome is 58004.95024875, with a leftover of 2.5e-07.