81386221 ÷ 475 
Our goal is to divide 81386221 by 475.

Advancing to step 1:
If we divide 8 by 475, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 475

Advancing to step 2:
475 goes into 81 0 times with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Bring next digit (3) of the dividend behind the 81 and repeat the process: 813 / 475

Advancing to step 3:
813 divided by 475 is 1 with a remainder of 338.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 475 from 813, we get 338.
Bring next digit (8) of the dividend behind the 338 and repeat the process: 3388 / 475

Moving on to step 4:
3388 divided by 475 is 7 with a remainder of 63.
The next digit of our result is 7. 
Result so far: 17.0
If we take 3325 away from 3388, we end up with 63.
Grab the next digit (6) from the dividend, add it to 63, then carry on: 636 / 475

On to step 5:
475 can be fit into 636 1 times, resulting in a remainder of 161.
The next digit of our result is 1. 
Result so far: 171.0
If we take 475 away from 636, we end up with 161.
Fetch the next digit (2) from the dividend, attach it to 161 and continue: 1612 / 475

On to step 6:
When dividing 1612 by 475, we get 3 with a remainder of 187.
The next digit of our result is 3. 
Result so far: 1713.0
Deduct 1425 from 1612 and we're left with 187.
Append the next digit (2) from the dividend to 187 and continue with: 1872 / 475

Moving on to step 7:
1872 divided by 475 is 3 with a remainder of 447.
Write down 3 as next digit of the result. 
Result so far: 17133.0
Deduct 1425 from 1872 and we're left with 447.
Take the next digit (1) from the dividend and append it to 447, then repeat: 4471 / 475

Let's proceed to step 8:
475 can be fit into 4471 9 times, resulting in a remainder of 196.
Use 9 as the next digit of our solution. 
Result so far: 171339.0
If we take 4275 away from 4471, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Step 9:
When dividing 1960 by 475, we get 4 with a remainder of 60.
Write down 4 as next digit of the result. 
Result so far: 171339.4
The remainder is 60 after subtracting 1900 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
475 can be fit into 600 1 times, resulting in a remainder of 125.
Use 1 as the next digit of our solution. 
Result so far: 171339.41
If we take 475 away from 600, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 11:
The number 475 fits into 1250 2 times, leaving a remainder of 300.
Put 2 as the next digit of the answer. 
Result so far: 171339.412
If we take 950 away from 1250, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 12:
When dividing 3000 by 475, we get 6 with a remainder of 150.
The next digit of our result is 6. 
Result so far: 171339.4126
Subtract 2850 from 3000 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 13:
When dividing 1500 by 475, we get 3 with a remainder of 75.
Record the quotient 3 as the next digit in the result. 
Result so far: 171339.41263
The remainder is 75 after subtracting 1425 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 14:
750 divided by 475 is 1 with a remainder of 275.
The number 1 becomes the next digit in our result. 
Result so far: 171339.412631
Deduct 475 from 750 and we're left with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Step 15:
The number 475 fits into 2750 5 times, leaving a remainder of 375.
The number 5 becomes the next digit in our result. 
Result so far: 171339.4126315
The remainder is 375 after subtracting 2375 from 2750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 16:
If we divide 3750 by 475, we get 7 and a remainder of 425.
Record the quotient 7 as the next digit in the result. 
Result so far: 171339.41263157
Subtract 3325 from 3750 to get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

The final result is 171339.41263157 with a remainder of 4.25e-07.