Let's divide 84742515 by 20
We want to figure out the number of times 84742515 can be divided by 20.

On to step 1:
When dividing 8 by 20, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 20

Let's proceed to step 2:
When dividing 84 by 20, we get 4 with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 80 from 84 to get 4.
Fetch the next digit (7) from the dividend, attach it to 4 and continue: 47 / 20

Let's proceed to step 3:
If we divide 47 by 20, we get 2 and a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we take 40 away from 47, we end up with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 20

Going ahead to step 4:
20 goes into 74 3 times with a remainder of 14.
The next digit of our result is 3. 
Result so far: 423.0
The remainder is 14 after subtracting 60 from 74.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 20

Let's proceed to step 5:
20 can be fit into 142 7 times, resulting in a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 4237.0
If we take 140 away from 142, we end up with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 20

Step 6:
20 can be fit into 25 1 times, resulting in a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 42371.0
Subtract 20 from 25 to get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 20

Going ahead to step 7:
If we divide 51 by 20, we get 2 and a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 423712.0
The remainder is 11 after subtracting 40 from 51.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 20

Going ahead to step 8:
20 can be fit into 115 5 times, resulting in a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 4237125.0
If we subtract 100 from 115, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 9:
20 can be fit into 150 7 times, resulting in a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 4237125.7
The remainder is 10 after subtracting 140 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 4237125.75
If we subtract 100 from 100, 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.

Moving on to step 11:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4237125.75
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.

Step 12:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4237125.75
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.

The final outcome is 4237125.75, with a leftover of 0.0.