We're dividing 48798990 by 321 
We want to figure out the number of times 48798990 can be divided by 321.

Advancing to step 1:
4 divided by 321 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 321

On to step 2:
321 goes into 48 0 times with a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 48 after subtracting 0 from 48.
Bring next digit (7) of the dividend behind the 48 and repeat the process: 487 / 321

Going ahead to step 3:
321 goes into 487 1 times with a remainder of 166.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 321 from 487, we get 166.
Include the next digit (9) from the dividend after 166, then repeat: 1669 / 321

Advancing to step 4:
If we divide 1669 by 321, we get 5 and a remainder of 64.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 64 after subtracting 1605 from 1669.
Grab the next digit (8) from the dividend, add it to 64, then carry on: 648 / 321

Going ahead to step 5:
648 divided by 321 is 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
Deduct 642 from 648 and we're left with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 321

Step 6:
321 goes into 69 0 times with a remainder of 69.
The number 0 becomes the next digit in our result. 
Result so far: 1520.0
If we subtract 0 from 69, we get 69.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 321

Going ahead to step 7:
321 can be fit into 699 2 times, resulting in a remainder of 57.
Record the quotient 2 as the next digit in the result. 
Result so far: 15202.0
The remainder is 57 after subtracting 642 from 699.
Take the next digit (0) from the dividend and append it to 57, then repeat: 570 / 321

Going ahead to step 8:
If we divide 570 by 321, we get 1 and a remainder of 249.
Write down 1 as next digit of the result. 
Result so far: 152021.0
Deduct 321 from 570 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.

Going ahead to step 9:
321 goes into 2490 7 times with a remainder of 243.
Put 7 as the next digit of the answer. 
Result so far: 152021.7
Subtract 2247 from 2490 to 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.

Moving on to step 10:
If we divide 2430 by 321, we get 7 and a remainder of 183.
Use 7 as the next digit of our solution. 
Result so far: 152021.77
If we subtract 2247 from 2430, we get 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

The final outcome is 152021.77, with a leftover of 0.183.