We're dividing 90389847 by 549 
We want to figure out the number of times 90389847 can be divided by 549.

On to step 1:
The number 549 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 549

Moving on to step 2:
If we divide 90 by 549, we get 0 and a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 90 and we're left with 90.
Include the next digit (3) from the dividend after 90, then repeat: 903 / 549

Step 3:
When dividing 903 by 549, we get 1 with a remainder of 354.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 549 from 903 leaves us with 354.
Grab the next digit (8) from the dividend, add it to 354, then carry on: 3548 / 549

On to step 4:
549 goes into 3548 6 times with a remainder of 254.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 254 after subtracting 3294 from 3548.
Grab the next digit (9) from the dividend, add it to 254, then carry on: 2549 / 549

On to step 5:
The number 549 fits into 2549 4 times, leaving a remainder of 353.
Use 4 as the next digit of our solution. 
Result so far: 164.0
Deduct 2196 from 2549 and we're left with 353.
Include the next digit (8) from the dividend after 353, then repeat: 3538 / 549

Going ahead to step 6:
549 goes into 3538 6 times with a remainder of 244.
Record the quotient 6 as the next digit in the result. 
Result so far: 1646.0
Deduct 3294 from 3538 and we're left with 244.
Bring next digit (4) of the dividend behind the 244 and repeat the process: 2444 / 549

On to step 7:
549 can be fit into 2444 4 times, resulting in a remainder of 248.
Put 4 as the next digit of the answer. 
Result so far: 16464.0
If we take 2196 away from 2444, we end up with 248.
Append the next digit (7) from the dividend to 248 and continue with: 2487 / 549

Advancing to step 8:
If we divide 2487 by 549, we get 4 and a remainder of 291.
The next digit of our result is 4. 
Result so far: 164644.0
If we subtract 2196 from 2487, we get 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

On to step 9:
If we divide 2910 by 549, we get 5 and a remainder of 165.
Use 5 as the next digit of our solution. 
Result so far: 164644.5
If we subtract 2745 from 2910, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Advancing to step 10:
The number 549 fits into 1650 3 times, leaving a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 164644.53
If we subtract 1647 from 1650, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 11:
549 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 164644.53
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
549 goes into 300 0 times with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 164644.53
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

After the division, we end up with 164644.53 and a remainder of 0.003.