We're dividing 78066206 by 155 
We want to figure out the number of times 78066206 can be divided by 155.

On to step 1:
The number 155 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 155

Going ahead to step 2:
When dividing 78 by 155, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Take the next digit (0) from the dividend and append it to 78, then repeat: 780 / 155

Step 3:
The number 155 fits into 780 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 775 from 780 to get 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 155

On to step 4:
When dividing 56 by 155, we get 0 with a remainder of 56.
Write down 0 as next digit of the result. 
Result so far: 50.0
Subtract 0 from 56 to get 56.
Take the next digit (6) from the dividend and append it to 56, then repeat: 566 / 155

Going ahead to step 5:
155 goes into 566 3 times with a remainder of 101.
Use 3 as the next digit of our solution. 
Result so far: 503.0
The remainder is 101 after subtracting 465 from 566.
Grab the next digit (2) from the dividend, add it to 101, then carry on: 1012 / 155

Advancing to step 6:
155 can be fit into 1012 6 times, resulting in a remainder of 82.
Write down 6 as next digit of the result. 
Result so far: 5036.0
Subtracting 930 from 1012 leaves us with 82.
Append the next digit (0) from the dividend to 82 and continue with: 820 / 155

Moving on to step 7:
155 goes into 820 5 times with a remainder of 45.
The next digit of our result is 5. 
Result so far: 50365.0
The remainder is 45 after subtracting 775 from 820.
Take the next digit (6) from the dividend and append it to 45, then repeat: 456 / 155

On to step 8:
When dividing 456 by 155, we get 2 with a remainder of 146.
Use 2 as the next digit of our solution. 
Result so far: 503652.0
Subtract 310 from 456 to get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Step 9:
155 can be fit into 1460 9 times, resulting in a remainder of 65.
Record the quotient 9 as the next digit in the result. 
Result so far: 503652.9
If we subtract 1395 from 1460, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 10:
When dividing 650 by 155, we get 4 with a remainder of 30.
The next digit of our result is 4. 
Result so far: 503652.94
Deduct 620 from 650 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
155 goes into 300 1 times with a remainder of 145.
Record the quotient 1 as the next digit in the result. 
Result so far: 503652.941
Subtract 155 from 300 to get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 12:
If we divide 1450 by 155, we get 9 and a remainder of 55.
Use 9 as the next digit of our solution. 
Result so far: 503652.9419
Subtracting 1395 from 1450 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 13:
155 can be fit into 550 3 times, resulting in a remainder of 85.
Put 3 as the next digit of the answer. 
Result so far: 503652.94193
Subtract 465 from 550 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 14:
The number 155 fits into 850 5 times, leaving a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 503652.941935
The remainder is 75 after subtracting 775 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 15:
155 can be fit into 750 4 times, resulting in a remainder of 130.
Put 4 as the next digit of the answer. 
Result so far: 503652.9419354
The remainder is 130 after subtracting 620 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Advancing to step 16:
When dividing 1300 by 155, we get 8 with a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 503652.94193548
If we take 1240 away from 1300, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 503652.94193548 with a balance of 6e-08.