75480992 divided by 166 
Our goal is to divide 75480992 by 166.

Step 1:
7 divided by 166 is 0 with 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.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 166

Advancing to step 2:
The number 166 fits into 75 0 times, leaving a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 75 after subtracting 0 from 75.
Take the next digit (4) from the dividend and append it to 75, then repeat: 754 / 166

On to step 3:
If we divide 754 by 166, we get 4 and a remainder of 90.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 664 from 754 and we're left with 90.
Take the next digit (8) from the dividend and append it to 90, then repeat: 908 / 166

Going ahead to step 4:
If we divide 908 by 166, we get 5 and a remainder of 78.
Use 5 as the next digit of our solution. 
Result so far: 45.0
Deduct 830 from 908 and we're left with 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 166

Step 5:
The number 166 fits into 780 4 times, leaving a remainder of 116.
The number 4 becomes the next digit in our result. 
Result so far: 454.0
Subtract 664 from 780 to get 116.
Grab the next digit (9) from the dividend, add it to 116, then carry on: 1169 / 166

Let's proceed to step 6:
1169 divided by 166 is 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 4547.0
If we take 1162 away from 1169, we end up with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 166

On to step 7:
If we divide 79 by 166, we get 0 and a remainder of 79.
The number 0 becomes the next digit in our result. 
Result so far: 45470.0
Subtracting 0 from 79 leaves us with 79.
Include the next digit (2) from the dividend after 79, then repeat: 792 / 166

Let's proceed to step 8:
When dividing 792 by 166, we get 4 with a remainder of 128.
Write down 4 as next digit of the result. 
Result so far: 454704.0
Subtracting 664 from 792 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 9:
If we divide 1280 by 166, we get 7 and a remainder of 118.
The next digit of our result is 7. 
Result so far: 454704.7
The remainder is 118 after subtracting 1162 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 10:
The number 166 fits into 1180 7 times, leaving a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 454704.77
Deduct 1162 from 1180 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 454704.77, with a leftover of 0.018.