Let's divide 21236018 by 525
Our goal is to divide 21236018 by 525.

On to step 1:
If we divide 2 by 525, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 525

On to step 2:
When dividing 21 by 525, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 525

Let's proceed to step 3:
If we divide 212 by 525, we get 0 and a remainder of 212.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 212 and we're left with 212.
Fetch the next digit (3) from the dividend, attach it to 212 and continue: 2123 / 525

Moving on to step 4:
2123 divided by 525 is 4 with a remainder of 23.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 23 after subtracting 2100 from 2123.
Take the next digit (6) from the dividend and append it to 23, then repeat: 236 / 525

Step 5:
When dividing 236 by 525, we get 0 with a remainder of 236.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Subtract 0 from 236 to get 236.
Grab the next digit (0) from the dividend, add it to 236, then carry on: 2360 / 525

On to step 6:
525 goes into 2360 4 times with a remainder of 260.
The number 4 becomes the next digit in our result. 
Result so far: 404.0
Subtracting 2100 from 2360 leaves us with 260.
Grab the next digit (1) from the dividend, add it to 260, then carry on: 2601 / 525

Step 7:
If we divide 2601 by 525, we get 4 and a remainder of 501.
Write down 4 as next digit of the result. 
Result so far: 4044.0
Subtracting 2100 from 2601 leaves us with 501.
Append the next digit (8) from the dividend to 501 and continue with: 5018 / 525

Moving on to step 8:
When dividing 5018 by 525, we get 9 with a remainder of 293.
Record the quotient 9 as the next digit in the result. 
Result so far: 40449.0
Subtract 4725 from 5018 to get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Going ahead to step 9:
2930 divided by 525 is 5 with a remainder of 305.
Put 5 as the next digit of the answer. 
Result so far: 40449.5
Subtracting 2625 from 2930 leaves us with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

On to step 10:
525 goes into 3050 5 times with a remainder of 425.
Write down 5 as next digit of the result. 
Result so far: 40449.55
Deduct 2625 from 3050 and we're left with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

The quotient of the division is 40449.55, and the remainder is 0.425.