Let's divide 782555 by 21
Let's see how many times 21 fits into 782555.

Moving on to step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 21

Let's proceed to step 2:
The number 21 fits into 78 3 times, leaving a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 63 from 78 and we're left with 15.
Include the next digit (2) from the dividend after 15, then repeat: 152 / 21

Advancing to step 3:
If we divide 152 by 21, we get 7 and a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Deduct 147 from 152 and we're left with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 21

Moving on to step 4:
If we divide 55 by 21, we get 2 and a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 372.0
Deduct 42 from 55 and we're left with 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 21

Moving on to step 5:
If we divide 135 by 21, we get 6 and a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 3726.0
If we subtract 126 from 135, we get 9.
Grab the next digit (5) from the dividend, add it to 9, then carry on: 95 / 21

Going ahead to step 6:
21 can be fit into 95 4 times, resulting in a remainder of 11.
The number 4 becomes the next digit in our result. 
Result so far: 37264.0
If we take 84 away from 95, 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.

Step 7:
110 divided by 21 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 37264.5
If we take 105 away from 110, we end up 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.

Moving on to step 8:
21 goes into 50 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 37264.52
Subtracting 42 from 50 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
80 divided by 21 is 3 with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 37264.523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 10:
170 divided by 21 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 37264.5238
Deduct 168 from 170 and we're left 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.

Going ahead to step 11:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 37264.5238
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.

On to step 12:
If we divide 200 by 21, we get 9 and a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 37264.523809
Deduct 189 from 200 and we're left 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.

Moving on to step 13:
21 can be fit into 110 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 37264.5238095
The remainder is 5 after subtracting 105 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
When dividing 50 by 21, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 37264.52380952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 37264.52380952 and a remainder of 8e-09.