We're dividing 21900151 by 65 
We want to figure out the number of times 21900151 can be divided by 65.

Going ahead to step 1:
2 divided by 65 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 65

Going ahead to step 2:
If we divide 21 by 65, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 65

On to step 3:
65 can be fit into 219 3 times, resulting in a remainder of 24.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 195 from 219 to get 24.
Grab the next digit (0) from the dividend, add it to 24, then carry on: 240 / 65

Advancing to step 4:
When dividing 240 by 65, we get 3 with a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
Subtract 195 from 240 to get 45.
Include the next digit (0) from the dividend after 45, then repeat: 450 / 65

Moving on to step 5:
65 goes into 450 6 times with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 336.0
Deduct 390 from 450 and we're left with 60.
Grab the next digit (1) from the dividend, add it to 60, then carry on: 601 / 65

Let's proceed to step 6:
The number 65 fits into 601 9 times, leaving a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 3369.0
If we take 585 away from 601, we end up with 16.
Fetch the next digit (5) from the dividend, attach it to 16 and continue: 165 / 65

Advancing to step 7:
165 divided by 65 is 2 with a remainder of 35.
Write down 2 as next digit of the result. 
Result so far: 33692.0
Subtract 130 from 165 to get 35.
Fetch the next digit (1) from the dividend, attach it to 35 and continue: 351 / 65

Going ahead to step 8:
65 goes into 351 5 times with a remainder of 26.
Write down 5 as next digit of the result. 
Result so far: 336925.0
Subtracting 325 from 351 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 9:
65 goes into 260 4 times with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 336925.4
If we subtract 260 from 260, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
If we divide 0 by 65, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 336925.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
The number 65 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 336925.4
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 336925.4, and the remainder is 0.0.