21117812 ÷ 358 
We want to figure out the number of times 21117812 can be divided by 358.

Let's proceed to step 1:
358 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 358

Advancing to step 2:
358 goes into 21 0 times with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (1) from the dividend, attach it to 21 and continue: 211 / 358

Moving on to step 3:
If we divide 211 by 358, we get 0 and a remainder of 211.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 211 and we're left with 211.
Grab the next digit (1) from the dividend, add it to 211, then carry on: 2111 / 358

On to step 4:
The number 358 fits into 2111 5 times, leaving a remainder of 321.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 1790 from 2111, we get 321.
Include the next digit (7) from the dividend after 321, then repeat: 3217 / 358

On to step 5:
358 goes into 3217 8 times with a remainder of 353.
Record the quotient 8 as the next digit in the result. 
Result so far: 58.0
If we subtract 2864 from 3217, we get 353.
Append the next digit (8) from the dividend to 353 and continue with: 3538 / 358

Let's proceed to step 6:
358 can be fit into 3538 9 times, resulting in a remainder of 316.
Use 9 as the next digit of our solution. 
Result so far: 589.0
The remainder is 316 after subtracting 3222 from 3538.
Bring next digit (1) of the dividend behind the 316 and repeat the process: 3161 / 358

Moving on to step 7:
When dividing 3161 by 358, we get 8 with a remainder of 297.
Use 8 as the next digit of our solution. 
Result so far: 5898.0
Subtract 2864 from 3161 to get 297.
Bring next digit (2) of the dividend behind the 297 and repeat the process: 2972 / 358

On to step 8:
358 can be fit into 2972 8 times, resulting in a remainder of 108.
Record the quotient 8 as the next digit in the result. 
Result so far: 58988.0
If we take 2864 away from 2972, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 9:
If we divide 1080 by 358, we get 3 and a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 58988.3
Subtracting 1074 from 1080 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
358 can be fit into 60 0 times, resulting in a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 58988.3
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 11:
If we divide 600 by 358, we get 1 and a remainder of 242.
Put 1 as the next digit of the answer. 
Result so far: 58988.301
The remainder is 242 after subtracting 358 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Step 12:
If we divide 2420 by 358, we get 6 and a remainder of 272.
Write down 6 as next digit of the result. 
Result so far: 58988.3016
Subtracting 2148 from 2420 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 13:
358 can be fit into 2720 7 times, resulting in a remainder of 214.
Write down 7 as next digit of the result. 
Result so far: 58988.30167
If we subtract 2506 from 2720, we get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Moving on to step 14:
358 goes into 2140 5 times with a remainder of 350.
Use 5 as the next digit of our solution. 
Result so far: 58988.301675
If we take 1790 away from 2140, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 15:
3500 divided by 358 is 9 with a remainder of 278.
Use 9 as the next digit of our solution. 
Result so far: 58988.3016759
If we take 3222 away from 3500, we end up with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Moving on to step 16:
If we divide 2780 by 358, we get 7 and a remainder of 274.
Put 7 as the next digit of the answer. 
Result so far: 58988.30167597
The remainder is 274 after subtracting 2506 from 2780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Our division results in 58988.30167597 with a remaining 2.74e-07.