We're dividing 3645743 by 243 
We're looking to find how many times 243 goes into 3645743.

Going ahead to step 1:
3 divided by 243 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 243

Moving on to step 2:
243 can be fit into 36 0 times, resulting in a remainder of 36.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 36 leaves us with 36.
Bring next digit (4) of the dividend behind the 36 and repeat the process: 364 / 243

On to step 3:
243 goes into 364 1 times with a remainder of 121.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 243 away from 364, we end up with 121.
Grab the next digit (5) from the dividend, add it to 121, then carry on: 1215 / 243

Step 4:
The number 243 fits into 1215 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 1215 away from 1215, we end up with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 243

Step 5:
243 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 150.0
If we subtract 0 from 7, we get 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 243

Moving on to step 6:
243 can be fit into 74 0 times, resulting in a remainder of 74.
The next digit of our result is 0. 
Result so far: 1500.0
Subtract 0 from 74 to get 74.
Take the next digit (3) from the dividend and append it to 74, then repeat: 743 / 243

Step 7:
The number 243 fits into 743 3 times, leaving a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 15003.0
If we take 729 away from 743, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
The number 243 fits into 140 0 times, leaving a remainder of 140.
Record the quotient 0 as the next digit in the result. 
Result so far: 15003.0
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 9:
243 goes into 1400 5 times with a remainder of 185.
Record the quotient 5 as the next digit in the result. 
Result so far: 15003.05
If we take 1215 away from 1400, we end up with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Advancing to step 10:
If we divide 1850 by 243, we get 7 and a remainder of 149.
Record the quotient 7 as the next digit in the result. 
Result so far: 15003.057
Subtracting 1701 from 1850 leaves us with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Advancing to step 11:
243 goes into 1490 6 times with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 15003.0576
Deduct 1458 from 1490 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
320 divided by 243 is 1 with a remainder of 77.
The number 1 becomes the next digit in our result. 
Result so far: 15003.05761
If we subtract 243 from 320, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 13:
When dividing 770 by 243, we get 3 with a remainder of 41.
Use 3 as the next digit of our solution. 
Result so far: 15003.057613
Subtracting 729 from 770 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 14:
243 can be fit into 410 1 times, resulting in a remainder of 167.
The next digit of our result is 1. 
Result so far: 15003.0576131
Subtracting 243 from 410 leaves us with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Going ahead to step 15:
243 can be fit into 1670 6 times, resulting in a remainder of 212.
The next digit of our result is 6. 
Result so far: 15003.05761316
Subtracting 1458 from 1670 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

After the division, we end up with 15003.05761316 and a remainder of 2.12e-07.