We're dividing 78185553 by 220 
We want to figure out the number of times 78185553 can be divided by 220.

Step 1:
7 divided by 220 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 220

Step 2:
220 can be fit into 78 0 times, resulting in a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (1) of the dividend behind the 78 and repeat the process: 781 / 220

Step 3:
220 goes into 781 3 times with a remainder of 121.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 660 from 781 leaves us with 121.
Append the next digit (8) from the dividend to 121 and continue with: 1218 / 220

Step 4:
When dividing 1218 by 220, we get 5 with a remainder of 118.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
The remainder is 118 after subtracting 1100 from 1218.
Include the next digit (5) from the dividend after 118, then repeat: 1185 / 220

On to step 5:
220 goes into 1185 5 times with a remainder of 85.
The number 5 becomes the next digit in our result. 
Result so far: 355.0
If we take 1100 away from 1185, we end up with 85.
Bring next digit (5) of the dividend behind the 85 and repeat the process: 855 / 220

On to step 6:
If we divide 855 by 220, we get 3 and a remainder of 195.
Write down 3 as next digit of the result. 
Result so far: 3553.0
Deduct 660 from 855 and we're left with 195.
Grab the next digit (5) from the dividend, add it to 195, then carry on: 1955 / 220

Moving on to step 7:
When dividing 1955 by 220, we get 8 with a remainder of 195.
Write down 8 as next digit of the result. 
Result so far: 35538.0
Subtracting 1760 from 1955 leaves us with 195.
Bring next digit (3) of the dividend behind the 195 and repeat the process: 1953 / 220

Going ahead to step 8:
220 goes into 1953 8 times with a remainder of 193.
Use 8 as the next digit of our solution. 
Result so far: 355388.0
The remainder is 193 after subtracting 1760 from 1953.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Moving on to step 9:
1930 divided by 220 is 8 with a remainder of 170.
Record the quotient 8 as the next digit in the result. 
Result so far: 355388.8
If we take 1760 away from 1930, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 10:
When dividing 1700 by 220, we get 7 with a remainder of 160.
Put 7 as the next digit of the answer. 
Result so far: 355388.87
If we subtract 1540 from 1700, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 11:
1600 divided by 220 is 7 with a remainder of 60.
Record the quotient 7 as the next digit in the result. 
Result so far: 355388.877
Subtract 1540 from 1600 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 355388.877 and a remainder of 0.006.