We look at the division of 77304998 by 172 
Let's see how many times 172 fits into 77304998.

On to step 1:
7 divided by 172 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 172

Step 2:
If we divide 77 by 172, we get 0 and a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Append the next digit (3) from the dividend to 77 and continue with: 773 / 172

Let's proceed to step 3:
The number 172 fits into 773 4 times, leaving a remainder of 85.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 85 after subtracting 688 from 773.
Bring next digit (0) of the dividend behind the 85 and repeat the process: 850 / 172

On to step 4:
If we divide 850 by 172, we get 4 and a remainder of 162.
Put 4 as the next digit of the answer. 
Result so far: 44.0
If we take 688 away from 850, we end up with 162.
Fetch the next digit (4) from the dividend, attach it to 162 and continue: 1624 / 172

Moving on to step 5:
1624 divided by 172 is 9 with a remainder of 76.
The next digit of our result is 9. 
Result so far: 449.0
The remainder is 76 after subtracting 1548 from 1624.
Bring next digit (9) of the dividend behind the 76 and repeat the process: 769 / 172

Going ahead to step 6:
769 divided by 172 is 4 with a remainder of 81.
The number 4 becomes the next digit in our result. 
Result so far: 4494.0
If we take 688 away from 769, we end up with 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 172

Advancing to step 7:
If we divide 819 by 172, we get 4 and a remainder of 131.
Use 4 as the next digit of our solution. 
Result so far: 44944.0
Subtracting 688 from 819 leaves us with 131.
Take the next digit (8) from the dividend and append it to 131, then repeat: 1318 / 172

Step 8:
If we divide 1318 by 172, we get 7 and a remainder of 114.
Record the quotient 7 as the next digit in the result. 
Result so far: 449447.0
Subtracting 1204 from 1318 leaves us with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 9:
1140 divided by 172 is 6 with a remainder of 108.
Use 6 as the next digit of our solution. 
Result so far: 449447.6
If we take 1032 away from 1140, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Going ahead to step 10:
When dividing 1080 by 172, we get 6 with a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 449447.66
Subtracting 1032 from 1080 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 449447.66, with a leftover of 0.048.