54672090 ÷ 321 
We're looking to find how many times 321 goes into 54672090.

Going ahead to step 1:
5 divided by 321 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 321

On to step 2:
When dividing 54 by 321, we get 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Include the next digit (6) from the dividend after 54, then repeat: 546 / 321

Going ahead to step 3:
When dividing 546 by 321, we get 1 with a remainder of 225.
The next digit of our result is 1. 
Result so far: 1.0
If we take 321 away from 546, we end up with 225.
Bring next digit (7) of the dividend behind the 225 and repeat the process: 2257 / 321

Let's proceed to step 4:
When dividing 2257 by 321, we get 7 with a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we take 2247 away from 2257, we end up with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 321

On to step 5:
When dividing 102 by 321, we get 0 with a remainder of 102.
The number 0 becomes the next digit in our result. 
Result so far: 170.0
Deduct 0 from 102 and we're left with 102.
Include the next digit (0) from the dividend after 102, then repeat: 1020 / 321

Let's proceed to step 6:
321 can be fit into 1020 3 times, resulting in a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 1703.0
Subtract 963 from 1020 to get 57.
Fetch the next digit (9) from the dividend, attach it to 57 and continue: 579 / 321

Step 7:
The number 321 fits into 579 1 times, leaving a remainder of 258.
Write down 1 as next digit of the result. 
Result so far: 17031.0
If we subtract 321 from 579, we get 258.
Grab the next digit (0) from the dividend, add it to 258, then carry on: 2580 / 321

Let's proceed to step 8:
321 can be fit into 2580 8 times, resulting in a remainder of 12.
The next digit of our result is 8. 
Result so far: 170318.0
If we take 2568 away from 2580, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
The number 321 fits into 120 0 times, leaving a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 170318.0
If we subtract 0 from 120, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 10:
When dividing 1200 by 321, we get 3 with a remainder of 237.
The number 3 becomes the next digit in our result. 
Result so far: 170318.03
The remainder is 237 after subtracting 963 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Going ahead to step 11:
321 goes into 2370 7 times with a remainder of 123.
The number 7 becomes the next digit in our result. 
Result so far: 170318.037
Deduct 2247 from 2370 and we're left with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Advancing to step 12:
The number 321 fits into 1230 3 times, leaving a remainder of 267.
The number 3 becomes the next digit in our result. 
Result so far: 170318.0373
Subtract 963 from 1230 to get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Moving on to step 13:
2670 divided by 321 is 8 with a remainder of 102.
The number 8 becomes the next digit in our result. 
Result so far: 170318.03738
If we subtract 2568 from 2670, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Advancing to step 14:
1020 divided by 321 is 3 with a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 170318.037383
The remainder is 57 after subtracting 963 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 15:
321 goes into 570 1 times with a remainder of 249.
The next digit of our result is 1. 
Result so far: 170318.0373831
The remainder is 249 after subtracting 321 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Advancing to step 16:
321 goes into 2490 7 times with a remainder of 243.
Write down 7 as next digit of the result. 
Result so far: 170318.03738317
If we subtract 2247 from 2490, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

In conclusion, the division gives 170318.03738317 with a balance of 2.43e-07.