We look at the division of 61784870 by 21 
We want to divide 61784870 by 21.

Advancing to step 1:
21 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 21

Advancing to step 2:
61 divided by 21 is 2 with a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 19 after subtracting 42 from 61.
Grab the next digit (7) from the dividend, add it to 19, then carry on: 197 / 21

Let's proceed to step 3:
When dividing 197 by 21, we get 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 29.0
The remainder is 8 after subtracting 189 from 197.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 21

Moving on to step 4:
When dividing 88 by 21, we get 4 with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 294.0
Subtract 84 from 88 to get 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 21

Advancing to step 5:
The number 21 fits into 44 2 times, leaving a remainder of 2.
The next digit of our result is 2. 
Result so far: 2942.0
If we take 42 away from 44, we end up with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 21

Advancing to step 6:
When dividing 28 by 21, we get 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 29421.0
If we subtract 21 from 28, we get 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 21

Step 7:
21 goes into 77 3 times with a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 294213.0
If we subtract 63 from 77, we get 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 21

On to step 8:
21 goes into 140 6 times with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 2942136.0
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 9:
If we divide 140 by 21, we get 6 and a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 2942136.6
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 10:
21 goes into 140 6 times with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 2942136.66
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The quotient of the division is 2942136.66, and the remainder is 0.014.