We divide 643824 by 55
We're looking to find how many times 55 goes into 643824.

Step 1:
55 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 55

Step 2:
55 can be fit into 64 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 55 from 64 to get 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 55

Step 3:
55 goes into 93 1 times with a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 55 from 93 leaves us with 38.
Take the next digit (8) from the dividend and append it to 38, then repeat: 388 / 55

Moving on to step 4:
When dividing 388 by 55, we get 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 117.0
If we subtract 385 from 388, we get 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 55

Step 5:
When dividing 32 by 55, we get 0 with a remainder of 32.
Put 0 as the next digit of the answer. 
Result so far: 1170.0
Subtracting 0 from 32 leaves us with 32.
Include the next digit (4) from the dividend after 32, then repeat: 324 / 55

Moving on to step 6:
55 can be fit into 324 5 times, resulting in a remainder of 49.
Record the quotient 5 as the next digit in the result. 
Result so far: 11705.0
Subtracting 275 from 324 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
55 can be fit into 490 8 times, resulting in a remainder of 50.
The number 8 becomes the next digit in our result. 
Result so far: 11705.8
The remainder is 50 after subtracting 440 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
55 can be fit into 500 9 times, resulting in a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 11705.89
Subtract 495 from 500 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
When dividing 50 by 55, we get 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 11705.89
Subtracting 0 from 50 leaves us 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.

Let's proceed to step 10:
500 divided by 55 is 9 with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 11705.8909
Subtract 495 from 500 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
If we divide 50 by 55, we get 0 and a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 11705.8909
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 12:
When dividing 500 by 55, we get 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 11705.890909
If we subtract 495 from 500, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 13:
55 goes into 50 0 times with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 11705.890909
If we take 0 away from 50, we end up 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.

Going ahead to step 14:
55 goes into 500 9 times with a remainder of 5.
The next digit of our result is 9. 
Result so far: 11705.89090909
Deduct 495 from 500 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 11705.89090909 and a remainder of 5e-09.