We're dividing 166951 by 4 
We want to figure out the number of times 166951 can be divided by 4.

Let's proceed to step 1:
If we divide 1 by 4, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 4

Going ahead to step 2:
4 can be fit into 16 4 times, resulting in a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 0 after subtracting 16 from 16.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 4

Advancing to step 3:
The number 4 fits into 6 1 times, leaving a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 41.0
Deduct 4 from 6 and we're left with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 4

Going ahead to step 4:
29 divided by 4 is 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 417.0
The remainder is 1 after subtracting 28 from 29.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 4

Advancing to step 5:
The number 4 fits into 15 3 times, leaving a remainder of 3.
The next digit of our result is 3. 
Result so far: 4173.0
Subtract 12 from 15 to get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 4

Moving on to step 6:
31 divided by 4 is 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 41737.0
Subtract 28 from 31 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
4 can be fit into 30 7 times, resulting in a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 41737.7
Subtract 28 from 30 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
If we divide 20 by 4, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 41737.75
If we take 20 away from 20, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
0 divided by 4 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 41737.75
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
If we divide 0 by 4, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 41737.75
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 41737.75 with a remainder of 0.0.