Let's divide 42687575 by 166
We're looking to find how many times 166 goes into 42687575.

On to step 1:
4 divided by 166 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 166

Let's proceed to step 2:
The number 166 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Fetch the next digit (6) from the dividend, attach it to 42 and continue: 426 / 166

Advancing to step 3:
166 can be fit into 426 2 times, resulting in a remainder of 94.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 332 from 426, we get 94.
Take the next digit (8) from the dividend and append it to 94, then repeat: 948 / 166

Moving on to step 4:
If we divide 948 by 166, we get 5 and a remainder of 118.
Write down 5 as next digit of the result. 
Result so far: 25.0
Deduct 830 from 948 and we're left with 118.
Take the next digit (7) from the dividend and append it to 118, then repeat: 1187 / 166

Moving on to step 5:
The number 166 fits into 1187 7 times, leaving a remainder of 25.
The next digit of our result is 7. 
Result so far: 257.0
If we subtract 1162 from 1187, we get 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 166

Moving on to step 6:
166 can be fit into 255 1 times, resulting in a remainder of 89.
Record the quotient 1 as the next digit in the result. 
Result so far: 2571.0
If we take 166 away from 255, we end up with 89.
Bring next digit (7) of the dividend behind the 89 and repeat the process: 897 / 166

Going ahead to step 7:
When dividing 897 by 166, we get 5 with a remainder of 67.
Use 5 as the next digit of our solution. 
Result so far: 25715.0
If we take 830 away from 897, we end up with 67.
Take the next digit (5) from the dividend and append it to 67, then repeat: 675 / 166

Moving on to step 8:
If we divide 675 by 166, we get 4 and a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 257154.0
If we take 664 away from 675, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 9:
The number 166 fits into 110 0 times, leaving a remainder of 110.
Use 0 as the next digit of our solution. 
Result so far: 257154.0
The remainder is 110 after subtracting 0 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 10:
1100 divided by 166 is 6 with a remainder of 104.
Write down 6 as next digit of the result. 
Result so far: 257154.06
If we take 996 away from 1100, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Advancing to step 11:
The number 166 fits into 1040 6 times, leaving a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 257154.066
Subtracting 996 from 1040 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final result is 257154.066 with a remainder of 0.0044.