We're dividing 778248 by 20 
We want to figure out the number of times 778248 can be divided by 20.

Moving on to step 1:
When dividing 7 by 20, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 20

On to step 2:
If we divide 77 by 20, we get 3 and a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 60 from 77 and we're left with 17.
Bring next digit (8) of the dividend behind the 17 and repeat the process: 178 / 20

Advancing to step 3:
178 divided by 20 is 8 with a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Subtract 160 from 178 to get 18.
Grab the next digit (2) from the dividend, add it to 18, then carry on: 182 / 20

Moving on to step 4:
20 goes into 182 9 times with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 389.0
Subtract 180 from 182 to get 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 20

Going ahead to step 5:
When dividing 24 by 20, we get 1 with a remainder of 4.
The next digit of our result is 1. 
Result so far: 3891.0
Deduct 20 from 24 and we're left with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 20

Step 6:
20 goes into 48 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 38912.0
The remainder is 8 after subtracting 40 from 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
The number 20 fits into 80 4 times, leaving a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 38912.4
Deduct 80 from 80 and we're left with 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.
The number 0 becomes the next digit in our result. 
Result so far: 38912.4
Subtract 0 from 0 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.

Going ahead to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 38912.4
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 38912.4 with a remaining 0.0.