We divide 21787991 by 64
Let's see how many times 64 fits into 21787991.

Going ahead to step 1:
The number 64 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 64

Moving on to step 2:
If we divide 21 by 64, we get 0 and a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 64

Let's proceed to step 3:
If we divide 217 by 64, we get 3 and a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 192 from 217 to get 25.
Fetch the next digit (8) from the dividend, attach it to 25 and continue: 258 / 64

Advancing to step 4:
When dividing 258 by 64, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
If we take 256 away from 258, we end up with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 64

On to step 5:
27 divided by 64 is 0 with a remainder of 27.
The number 0 becomes the next digit in our result. 
Result so far: 340.0
If we take 0 away from 27, we end up with 27.
Append the next digit (9) from the dividend to 27 and continue with: 279 / 64

Let's proceed to step 6:
The number 64 fits into 279 4 times, leaving a remainder of 23.
The number 4 becomes the next digit in our result. 
Result so far: 3404.0
The remainder is 23 after subtracting 256 from 279.
Append the next digit (9) from the dividend to 23 and continue with: 239 / 64

On to step 7:
64 goes into 239 3 times with a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 34043.0
Subtracting 192 from 239 leaves us with 47.
Append the next digit (1) from the dividend to 47 and continue with: 471 / 64

On to step 8:
64 goes into 471 7 times with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 340437.0
If we subtract 448 from 471, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 9:
When dividing 230 by 64, we get 3 with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 340437.3
If we subtract 192 from 230, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 10:
When dividing 380 by 64, we get 5 with a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 340437.35
Deduct 320 from 380 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 11:
If we divide 600 by 64, we get 9 and a remainder of 24.
Write down 9 as next digit of the result. 
Result so far: 340437.359
Deduct 576 from 600 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
64 goes into 240 3 times with a remainder of 48.
Put 3 as the next digit of the answer. 
Result so far: 340437.3593
The remainder is 48 after subtracting 192 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 13:
480 divided by 64 is 7 with a remainder of 32.
Put 7 as the next digit of the answer. 
Result so far: 340437.35937
If we take 448 away from 480, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
If we divide 320 by 64, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 340437.359375
If we take 320 away from 320, 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.

On to step 15:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 340437.359375
Deduct 0 from 0 and we're left 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.

Moving on to step 16:
0 divided by 64 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 340437.359375
If we subtract 0 from 0, 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.

The final outcome is 340437.359375, with a leftover of 0.0.