Let's divide 61978 by 21
We want to figure out the number of times 61978 can be divided by 21.

Going ahead to step 1:
If we divide 6 by 21, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 21

On to step 2:
When dividing 61 by 21, we get 2 with a remainder of 19.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 42 from 61 and we're left with 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 21

Step 3:
When dividing 199 by 21, we get 9 with a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
If we take 189 away from 199, we end up with 10.
Grab the next digit (7) from the dividend, add it to 10, then carry on: 107 / 21

Let's proceed to step 4:
21 goes into 107 5 times with a remainder of 2.
The next digit of our result is 5. 
Result so far: 295.0
Deduct 105 from 107 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 21

Let's proceed to step 5:
If we divide 28 by 21, we get 1 and a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 2951.0
The remainder is 7 after subtracting 21 from 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 6:
When dividing 70 by 21, we get 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 2951.3
Subtracting 63 from 70 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 21, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 2951.33
Subtracting 63 from 70 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 2951.33 and a remainder of 0.007.