We divide 78221117 by 405
Our goal is to divide 78221117 by 405.

Moving on to step 1:
405 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 405

Going ahead to step 2:
When dividing 78 by 405, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Grab the next digit (2) from the dividend, add it to 78, then carry on: 782 / 405

Going ahead to step 3:
When dividing 782 by 405, we get 1 with a remainder of 377.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 405 from 782 to get 377.
Bring next digit (2) of the dividend behind the 377 and repeat the process: 3772 / 405

Step 4:
If we divide 3772 by 405, we get 9 and a remainder of 127.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 3645 from 3772 and we're left with 127.
Fetch the next digit (1) from the dividend, attach it to 127 and continue: 1271 / 405

Step 5:
The number 405 fits into 1271 3 times, leaving a remainder of 56.
The next digit of our result is 3. 
Result so far: 193.0
Deduct 1215 from 1271 and we're left with 56.
Grab the next digit (1) from the dividend, add it to 56, then carry on: 561 / 405

Moving on to step 6:
405 can be fit into 561 1 times, resulting in a remainder of 156.
The number 1 becomes the next digit in our result. 
Result so far: 1931.0
Deduct 405 from 561 and we're left with 156.
Take the next digit (1) from the dividend and append it to 156, then repeat: 1561 / 405

Moving on to step 7:
405 goes into 1561 3 times with a remainder of 346.
Use 3 as the next digit of our solution. 
Result so far: 19313.0
If we subtract 1215 from 1561, we get 346.
Grab the next digit (7) from the dividend, add it to 346, then carry on: 3467 / 405

Advancing to step 8:
405 goes into 3467 8 times with a remainder of 227.
Put 8 as the next digit of the answer. 
Result so far: 193138.0
Deduct 3240 from 3467 and we're left with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

On to step 9:
405 goes into 2270 5 times with a remainder of 245.
The number 5 becomes the next digit in our result. 
Result so far: 193138.5
Subtract 2025 from 2270 to get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Advancing to step 10:
405 goes into 2450 6 times with a remainder of 20.
The next digit of our result is 6. 
Result so far: 193138.56
Subtracting 2430 from 2450 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
If we divide 200 by 405, we get 0 and a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 193138.56
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 12:
2000 divided by 405 is 4 with a remainder of 380.
The next digit of our result is 4. 
Result so far: 193138.5604
If we take 1620 away from 2000, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 13:
When dividing 3800 by 405, we get 9 with a remainder of 155.
The next digit of our result is 9. 
Result so far: 193138.56049
If we take 3645 away from 3800, we end up with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

On to step 14:
405 goes into 1550 3 times with a remainder of 335.
Write down 3 as next digit of the result. 
Result so far: 193138.560493
The remainder is 335 after subtracting 1215 from 1550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Moving on to step 15:
When dividing 3350 by 405, we get 8 with a remainder of 110.
Write down 8 as next digit of the result. 
Result so far: 193138.5604938
Subtracting 3240 from 3350 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 16:
If we divide 1100 by 405, we get 2 and a remainder of 290.
Put 2 as the next digit of the answer. 
Result so far: 193138.56049382
Deduct 810 from 1100 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final outcome is 193138.56049382, with a leftover of 2.9e-07.