We look at the division of 91221586 by 388 
We're looking to find how many times 388 goes into 91221586.

Moving on to step 1:
388 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 388

Let's proceed to step 2:
If we divide 91 by 388, we get 0 and a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Take the next digit (2) from the dividend and append it to 91, then repeat: 912 / 388

On to step 3:
388 goes into 912 2 times with a remainder of 136.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 776 from 912 and we're left with 136.
Grab the next digit (2) from the dividend, add it to 136, then carry on: 1362 / 388

Moving on to step 4:
When dividing 1362 by 388, we get 3 with a remainder of 198.
The next digit of our result is 3. 
Result so far: 23.0
Subtracting 1164 from 1362 leaves us with 198.
Fetch the next digit (1) from the dividend, attach it to 198 and continue: 1981 / 388

Going ahead to step 5:
If we divide 1981 by 388, we get 5 and a remainder of 41.
The number 5 becomes the next digit in our result. 
Result so far: 235.0
If we subtract 1940 from 1981, we get 41.
Bring next digit (5) of the dividend behind the 41 and repeat the process: 415 / 388

Moving on to step 6:
When dividing 415 by 388, we get 1 with a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 2351.0
If we take 388 away from 415, we end up with 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 388

Step 7:
When dividing 278 by 388, we get 0 with a remainder of 278.
Use 0 as the next digit of our solution. 
Result so far: 23510.0
The remainder is 278 after subtracting 0 from 278.
Bring next digit (6) of the dividend behind the 278 and repeat the process: 2786 / 388

Advancing to step 8:
2786 divided by 388 is 7 with a remainder of 70.
Write down 7 as next digit of the result. 
Result so far: 235107.0
If we subtract 2716 from 2786, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 9:
388 can be fit into 700 1 times, resulting in a remainder of 312.
The number 1 becomes the next digit in our result. 
Result so far: 235107.1
Subtracting 388 from 700 leaves us with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Moving on to step 10:
If we divide 3120 by 388, we get 8 and a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 235107.18
If we subtract 3104 from 3120, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 11:
If we divide 160 by 388, we get 0 and a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 235107.18
If we take 0 away from 160, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 12:
388 can be fit into 1600 4 times, resulting in a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 235107.1804
If we take 1552 away from 1600, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 13:
If we divide 480 by 388, we get 1 and a remainder of 92.
Record the quotient 1 as the next digit in the result. 
Result so far: 235107.18041
If we subtract 388 from 480, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 14:
If we divide 920 by 388, we get 2 and a remainder of 144.
The next digit of our result is 2. 
Result so far: 235107.180412
If we subtract 776 from 920, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Let's proceed to step 15:
The number 388 fits into 1440 3 times, leaving a remainder of 276.
Put 3 as the next digit of the answer. 
Result so far: 235107.1804123
If we take 1164 away from 1440, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Step 16:
2760 divided by 388 is 7 with a remainder of 44.
Record the quotient 7 as the next digit in the result. 
Result so far: 235107.18041237
If we subtract 2716 from 2760, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

In conclusion, the division gives 235107.18041237 with a balance of 4.4e-08.