We're dividing 615620 by 20 
We want to figure out the number of times 615620 can be divided by 20.

Moving on to step 1:
6 divided by 20 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 20

Let's proceed to step 2:
The number 20 fits into 61 3 times, leaving a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 60 from 61 leaves us with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 20

Moving on to step 3:
15 divided by 20 is 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 30.0
Subtract 0 from 15 to get 15.
Fetch the next digit (6) from the dividend, attach it to 15 and continue: 156 / 20

Step 4:
The number 20 fits into 156 7 times, leaving a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 307.0
If we take 140 away from 156, we end up with 16.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 20

Going ahead to step 5:
20 goes into 162 8 times with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 3078.0
Subtract 160 from 162 to get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 20

Advancing to step 6:
20 goes into 20 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 30781.0
Subtract 20 from 20 to 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.

Let's proceed to step 7:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30781.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30781.0
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.

Our division results in 30781.0 with a remaining 0.0.