We look at the division of 12347100 by 405 
Let's see how many times 405 fits into 12347100.

Going ahead to step 1:
When dividing 1 by 405, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 405

Advancing to step 2:
405 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 405

Going ahead to step 3:
The number 405 fits into 123 0 times, leaving a remainder of 123.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 123 leaves us with 123.
Append the next digit (4) from the dividend to 123 and continue with: 1234 / 405

Advancing to step 4:
The number 405 fits into 1234 3 times, leaving a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 1215 from 1234 to get 19.
Include the next digit (7) from the dividend after 19, then repeat: 197 / 405

Moving on to step 5:
If we divide 197 by 405, we get 0 and a remainder of 197.
The next digit of our result is 0. 
Result so far: 30.0
Deduct 0 from 197 and we're left with 197.
Take the next digit (1) from the dividend and append it to 197, then repeat: 1971 / 405

On to step 6:
If we divide 1971 by 405, we get 4 and a remainder of 351.
Use 4 as the next digit of our solution. 
Result so far: 304.0
Deduct 1620 from 1971 and we're left with 351.
Append the next digit (0) from the dividend to 351 and continue with: 3510 / 405

On to step 7:
405 goes into 3510 8 times with a remainder of 270.
Put 8 as the next digit of the answer. 
Result so far: 3048.0
The remainder is 270 after subtracting 3240 from 3510.
Fetch the next digit (0) from the dividend, attach it to 270 and continue: 2700 / 405

Advancing to step 8:
2700 divided by 405 is 6 with a remainder of 270.
Record the quotient 6 as the next digit in the result. 
Result so far: 30486.0
Subtracting 2430 from 2700 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

On to step 9:
405 can be fit into 2700 6 times, resulting in a remainder of 270.
The next digit of our result is 6. 
Result so far: 30486.6
Subtract 2430 from 2700 to get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 10:
The number 405 fits into 2700 6 times, leaving a remainder of 270.
Use 6 as the next digit of our solution. 
Result so far: 30486.66
Deduct 2430 from 2700 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

In conclusion, the division gives 30486.66 with a balance of 0.27.