We look at the division of 77555818 by 166 
We're looking to find how many times 166 goes into 77555818.

Moving on to step 1:
166 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 166

On to step 2:
If we divide 77 by 166, we get 0 and a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Append the next digit (5) from the dividend to 77 and continue with: 775 / 166

Moving on to step 3:
The number 166 fits into 775 4 times, leaving a remainder of 111.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 111 after subtracting 664 from 775.
Append the next digit (5) from the dividend to 111 and continue with: 1115 / 166

On to step 4:
The number 166 fits into 1115 6 times, leaving a remainder of 119.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtract 996 from 1115 to get 119.
Bring next digit (5) of the dividend behind the 119 and repeat the process: 1195 / 166

On to step 5:
166 can be fit into 1195 7 times, resulting in a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 467.0
If we subtract 1162 from 1195, we get 33.
Bring next digit (8) of the dividend behind the 33 and repeat the process: 338 / 166

Step 6:
When dividing 338 by 166, we get 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 4672.0
If we take 332 away from 338, we end up with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 166

Going ahead to step 7:
If we divide 61 by 166, we get 0 and a remainder of 61.
Write down 0 as next digit of the result. 
Result so far: 46720.0
The remainder is 61 after subtracting 0 from 61.
Grab the next digit (8) from the dividend, add it to 61, then carry on: 618 / 166

On to step 8:
618 divided by 166 is 3 with a remainder of 120.
The number 3 becomes the next digit in our result. 
Result so far: 467203.0
Deduct 498 from 618 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 9:
166 goes into 1200 7 times with a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 467203.7
Deduct 1162 from 1200 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 10:
166 can be fit into 380 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 467203.72
If we subtract 332 from 380, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 11:
The number 166 fits into 480 2 times, leaving a remainder of 148.
The number 2 becomes the next digit in our result. 
Result so far: 467203.722
If we subtract 332 from 480, we get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

After the division, we end up with 467203.722 and a remainder of 0.0148.