We look at the division of 171381 by 4 
We want to figure out the number of times 171381 can be divided by 4.

Advancing to step 1:
If we divide 1 by 4, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 4

Advancing to step 2:
When dividing 17 by 4, we get 4 with a remainder of 1.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 16 from 17 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 4

Let's proceed to step 3:
The number 4 fits into 11 2 times, leaving a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 42.0
The remainder is 3 after subtracting 8 from 11.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 4

Advancing to step 4:
33 divided by 4 is 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 428.0
Subtract 32 from 33 to get 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 4

Let's proceed to step 5:
If we divide 18 by 4, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 4284.0
If we subtract 16 from 18, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 4

Let's proceed to step 6:
4 goes into 21 5 times with a remainder of 1.
The next digit of our result is 5. 
Result so far: 42845.0
If we subtract 20 from 21, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
If we divide 10 by 4, we get 2 and a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 42845.2
Subtracting 8 from 10 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
When dividing 20 by 4, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 42845.25
Subtract 20 from 20 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
4 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42845.25
If we take 0 away from 0, 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 10:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 42845.25
If we subtract 0 from 0, we get 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 quotient of the division is 42845.25, and the remainder is 0.0.