We're dividing 66407847 by 549 
We want to figure out the number of times 66407847 can be divided by 549.

On to step 1:
When dividing 6 by 549, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 549

On to step 2:
When dividing 66 by 549, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (4) from the dividend to 66 and continue with: 664 / 549

Moving on to step 3:
If we divide 664 by 549, we get 1 and a remainder of 115.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 115 after subtracting 549 from 664.
Append the next digit (0) from the dividend to 115 and continue with: 1150 / 549

Let's proceed to step 4:
When dividing 1150 by 549, we get 2 with a remainder of 52.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 1098 away from 1150, we end up with 52.
Grab the next digit (7) from the dividend, add it to 52, then carry on: 527 / 549

Going ahead to step 5:
549 goes into 527 0 times with a remainder of 527.
Use 0 as the next digit of our solution. 
Result so far: 120.0
Deduct 0 from 527 and we're left with 527.
Take the next digit (8) from the dividend and append it to 527, then repeat: 5278 / 549

Moving on to step 6:
When dividing 5278 by 549, we get 9 with a remainder of 337.
The number 9 becomes the next digit in our result. 
Result so far: 1209.0
Subtracting 4941 from 5278 leaves us with 337.
Append the next digit (4) from the dividend to 337 and continue with: 3374 / 549

Going ahead to step 7:
If we divide 3374 by 549, we get 6 and a remainder of 80.
Record the quotient 6 as the next digit in the result. 
Result so far: 12096.0
Deduct 3294 from 3374 and we're left with 80.
Take the next digit (7) from the dividend and append it to 80, then repeat: 807 / 549

Advancing to step 8:
549 can be fit into 807 1 times, resulting in a remainder of 258.
Use 1 as the next digit of our solution. 
Result so far: 120961.0
If we subtract 549 from 807, we get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Going ahead to step 9:
If we divide 2580 by 549, we get 4 and a remainder of 384.
Use 4 as the next digit of our solution. 
Result so far: 120961.4
Deduct 2196 from 2580 and we're left with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Going ahead to step 10:
549 can be fit into 3840 6 times, resulting in a remainder of 546.
The next digit of our result is 6. 
Result so far: 120961.46
If we subtract 3294 from 3840, we get 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Advancing to step 11:
549 can be fit into 5460 9 times, resulting in a remainder of 519.
Write down 9 as next digit of the result. 
Result so far: 120961.469
Subtract 4941 from 5460 to get 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

Let's proceed to step 12:
549 goes into 5190 9 times with a remainder of 249.
Record the quotient 9 as the next digit in the result. 
Result so far: 120961.4699
Deduct 4941 from 5190 and we're left with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

In conclusion, the division gives 120961.4699 with a balance of 0.00249.