We're dividing 82121591 by 214 
We want to figure out the number of times 82121591 can be divided by 214.

Going ahead to step 1:
214 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 214

Going ahead to step 2:
82 divided by 214 is 0 with a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 82 to get 82.
Append the next digit (1) from the dividend to 82 and continue with: 821 / 214

Moving on to step 3:
821 divided by 214 is 3 with a remainder of 179.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 642 from 821 and we're left with 179.
Grab the next digit (2) from the dividend, add it to 179, then carry on: 1792 / 214

Advancing to step 4:
When dividing 1792 by 214, we get 8 with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 38.0
The remainder is 80 after subtracting 1712 from 1792.
Append the next digit (1) from the dividend to 80 and continue with: 801 / 214

On to step 5:
If we divide 801 by 214, we get 3 and a remainder of 159.
Use 3 as the next digit of our solution. 
Result so far: 383.0
Subtract 642 from 801 to get 159.
Fetch the next digit (5) from the dividend, attach it to 159 and continue: 1595 / 214

Advancing to step 6:
214 goes into 1595 7 times with a remainder of 97.
Use 7 as the next digit of our solution. 
Result so far: 3837.0
Deduct 1498 from 1595 and we're left with 97.
Bring next digit (9) of the dividend behind the 97 and repeat the process: 979 / 214

On to step 7:
979 divided by 214 is 4 with a remainder of 123.
Record the quotient 4 as the next digit in the result. 
Result so far: 38374.0
Subtract 856 from 979 to get 123.
Include the next digit (1) from the dividend after 123, then repeat: 1231 / 214

On to step 8:
1231 divided by 214 is 5 with a remainder of 161.
The number 5 becomes the next digit in our result. 
Result so far: 383745.0
Subtracting 1070 from 1231 leaves us with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Let's proceed to step 9:
When dividing 1610 by 214, we get 7 with a remainder of 112.
The number 7 becomes the next digit in our result. 
Result so far: 383745.7
The remainder is 112 after subtracting 1498 from 1610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 10:
214 can be fit into 1120 5 times, resulting in a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 383745.75
Deduct 1070 from 1120 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 11:
214 can be fit into 500 2 times, resulting in a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 383745.752
The remainder is 72 after subtracting 428 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 12:
The number 214 fits into 720 3 times, leaving a remainder of 78.
The number 3 becomes the next digit in our result. 
Result so far: 383745.7523
Subtracting 642 from 720 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 13:
The number 214 fits into 780 3 times, leaving a remainder of 138.
Use 3 as the next digit of our solution. 
Result so far: 383745.75233
If we take 642 away from 780, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Our division results in 383745.75233 with a remaining 0.000138.