243720 ÷ 91 
We're looking to find how many times 91 goes into 243720.

Let's proceed to step 1:
91 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 91

Moving on to step 2:
When dividing 24 by 91, we get 0 with a remainder of 24.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 24, we get 24.
Append the next digit (3) from the dividend to 24 and continue with: 243 / 91

Advancing to step 3:
91 can be fit into 243 2 times, resulting in a remainder of 61.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 182 from 243 leaves us with 61.
Bring next digit (7) of the dividend behind the 61 and repeat the process: 617 / 91

Step 4:
617 divided by 91 is 6 with a remainder of 71.
Use 6 as the next digit of our solution. 
Result so far: 26.0
If we take 546 away from 617, we end up with 71.
Include the next digit (2) from the dividend after 71, then repeat: 712 / 91

On to step 5:
91 can be fit into 712 7 times, resulting in a remainder of 75.
The next digit of our result is 7. 
Result so far: 267.0
Subtracting 637 from 712 leaves us with 75.
Bring next digit (0) of the dividend behind the 75 and repeat the process: 750 / 91

Moving on to step 6:
91 can be fit into 750 8 times, resulting in a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 2678.0
The remainder is 22 after subtracting 728 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 7:
220 divided by 91 is 2 with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 2678.2
If we subtract 182 from 220, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 8:
When dividing 380 by 91, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 2678.24
Subtracting 364 from 380 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
91 goes into 160 1 times with a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 2678.241
Subtracting 91 from 160 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 10:
When dividing 690 by 91, we get 7 with a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 2678.2417
Subtract 637 from 690 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 11:
If we divide 530 by 91, we get 5 and a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 2678.24175
If we take 455 away from 530, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 12:
If we divide 750 by 91, we get 8 and a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 2678.241758
Deduct 728 from 750 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
When dividing 220 by 91, we get 2 with a remainder of 38.
The next digit of our result is 2. 
Result so far: 2678.2417582
Subtracting 182 from 220 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 14:
When dividing 380 by 91, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 2678.24175824
If we take 364 away from 380, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 2678.24175824, with a leftover of 1.6e-08.