We're dividing 78561585 by 166 
Let's see how many times 166 fits into 78561585.

Moving on to step 1:
7 divided by 166 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 166

Let's proceed to step 2:
166 goes into 78 0 times with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (5) from the dividend after 78, then repeat: 785 / 166

Moving on to step 3:
When dividing 785 by 166, we get 4 with a remainder of 121.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 664 from 785 to get 121.
Include the next digit (6) from the dividend after 121, then repeat: 1216 / 166

On to step 4:
1216 divided by 166 is 7 with a remainder of 54.
Record the quotient 7 as the next digit in the result. 
Result so far: 47.0
If we take 1162 away from 1216, we end up with 54.
Grab the next digit (1) from the dividend, add it to 54, then carry on: 541 / 166

Going ahead to step 5:
166 goes into 541 3 times with a remainder of 43.
The next digit of our result is 3. 
Result so far: 473.0
If we take 498 away from 541, we end up with 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 166

Moving on to step 6:
If we divide 435 by 166, we get 2 and a remainder of 103.
The number 2 becomes the next digit in our result. 
Result so far: 4732.0
If we take 332 away from 435, we end up with 103.
Bring next digit (8) of the dividend behind the 103 and repeat the process: 1038 / 166

Step 7:
If we divide 1038 by 166, we get 6 and a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 47326.0
Subtracting 996 from 1038 leaves us with 42.
Bring next digit (5) of the dividend behind the 42 and repeat the process: 425 / 166

Let's proceed to step 8:
The number 166 fits into 425 2 times, leaving a remainder of 93.
Put 2 as the next digit of the answer. 
Result so far: 473262.0
The remainder is 93 after subtracting 332 from 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Let's proceed to step 9:
166 can be fit into 930 5 times, resulting in a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 473262.5
Subtracting 830 from 930 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 10:
166 goes into 1000 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 473262.56
Deduct 996 from 1000 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
166 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 473262.56
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
If we divide 400 by 166, we get 2 and a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 473262.5602
Subtracting 332 from 400 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 13:
166 can be fit into 680 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 473262.56024
Subtracting 664 from 680 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 14:
If we divide 160 by 166, we get 0 and a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 473262.56024
Deduct 0 from 160 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 15:
1600 divided by 166 is 9 with a remainder of 106.
Write down 9 as next digit of the result. 
Result so far: 473262.5602409
The remainder is 106 after subtracting 1494 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 16:
If we divide 1060 by 166, we get 6 and a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 473262.56024096
Deduct 996 from 1060 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final result is 473262.56024096 with a remainder of 6.4e-08.