We divide 21598126 by 780
Our goal is to divide 21598126 by 780.

On to step 1:
The number 780 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.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 780

Moving on to step 2:
780 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 780

Let's proceed to step 3:
The number 780 fits into 215 0 times, leaving a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 215, we get 215.
Include the next digit (9) from the dividend after 215, then repeat: 2159 / 780

Let's proceed to step 4:
780 goes into 2159 2 times with a remainder of 599.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 599 after subtracting 1560 from 2159.
Grab the next digit (8) from the dividend, add it to 599, then carry on: 5998 / 780

Advancing to step 5:
780 can be fit into 5998 7 times, resulting in a remainder of 538.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Subtract 5460 from 5998 to get 538.
Grab the next digit (1) from the dividend, add it to 538, then carry on: 5381 / 780

Let's proceed to step 6:
The number 780 fits into 5381 6 times, leaving a remainder of 701.
Use 6 as the next digit of our solution. 
Result so far: 276.0
Subtracting 4680 from 5381 leaves us with 701.
Take the next digit (2) from the dividend and append it to 701, then repeat: 7012 / 780

Step 7:
780 goes into 7012 8 times with a remainder of 772.
The next digit of our result is 8. 
Result so far: 2768.0
If we take 6240 away from 7012, we end up with 772.
Fetch the next digit (6) from the dividend, attach it to 772 and continue: 7726 / 780

Advancing to step 8:
When dividing 7726 by 780, we get 9 with a remainder of 706.
Write down 9 as next digit of the result. 
Result so far: 27689.0
If we subtract 7020 from 7726, we get 706.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7060, and continue the process.

Moving on to step 9:
If we divide 7060 by 780, we get 9 and a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 27689.9
Subtract 7020 from 7060 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
780 can be fit into 400 0 times, resulting in a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 27689.9
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 11:
780 goes into 4000 5 times with a remainder of 100.
The next digit of our result is 5. 
Result so far: 27689.905
Subtract 3900 from 4000 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 12:
When dividing 1000 by 780, we get 1 with a remainder of 220.
The number 1 becomes the next digit in our result. 
Result so far: 27689.9051
If we take 780 away from 1000, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 13:
When dividing 2200 by 780, we get 2 with a remainder of 640.
The next digit of our result is 2. 
Result so far: 27689.90512
Subtract 1560 from 2200 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Advancing to step 14:
If we divide 6400 by 780, we get 8 and a remainder of 160.
Use 8 as the next digit of our solution. 
Result so far: 27689.905128
If we subtract 6240 from 6400, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 15:
1600 divided by 780 is 2 with a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 27689.9051282
If we take 1560 away from 1600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 16:
The number 780 fits into 400 0 times, leaving a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 27689.9051282
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 27689.9051282 and a remainder of 4e-07.