We divide 643370 by 27
Let's see how many times 27 fits into 643370.

On to step 1:
27 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 27

Going ahead to step 2:
If we divide 64 by 27, we get 2 and a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 10 after subtracting 54 from 64.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 27

Step 3:
The number 27 fits into 103 3 times, leaving a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Subtracting 81 from 103 leaves us with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 27

On to step 4:
27 can be fit into 223 8 times, resulting in a remainder of 7.
The next digit of our result is 8. 
Result so far: 238.0
Subtract 216 from 223 to get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 27

Step 5:
The number 27 fits into 77 2 times, leaving a remainder of 23.
Use 2 as the next digit of our solution. 
Result so far: 2382.0
The remainder is 23 after subtracting 54 from 77.
Append the next digit (0) from the dividend to 23 and continue with: 230 / 27

Step 6:
27 goes into 230 8 times with a remainder of 14.
The next digit of our result is 8. 
Result so far: 23828.0
Subtract 216 from 230 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
If we divide 140 by 27, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 23828.5
If we subtract 135 from 140, 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.

Going ahead to step 8:
If we divide 50 by 27, we get 1 and a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 23828.51
If we subtract 27 from 50, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
If we divide 230 by 27, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 23828.518
If we take 216 away from 230, 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.

Let's proceed to step 10:
140 divided by 27 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 23828.5185
Subtract 135 from 140 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.

On to step 11:
If we divide 50 by 27, we get 1 and a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 23828.51851
Subtracting 27 from 50 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 12:
27 goes into 230 8 times with a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 23828.518518
If we take 216 away from 230, 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.

Step 13:
27 goes into 140 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 23828.5185185
If we subtract 135 from 140, 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.

Moving on to step 14:
If we divide 50 by 27, we get 1 and a remainder of 23.
The next digit of our result is 1. 
Result so far: 23828.51851851
Subtracting 27 from 50 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

The final outcome is 23828.51851851, with a leftover of 2.3e-08.