We're dividing 77554480 by 620 
Our goal is to divide 77554480 by 620.

Let's proceed to step 1:
When dividing 7 by 620, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 620

Advancing to step 2:
620 goes into 77 0 times with a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Bring next digit (5) of the dividend behind the 77 and repeat the process: 775 / 620

Step 3:
620 can be fit into 775 1 times, resulting in a remainder of 155.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 620 away from 775, we end up with 155.
Take the next digit (5) from the dividend and append it to 155, then repeat: 1555 / 620

Advancing to step 4:
When dividing 1555 by 620, we get 2 with a remainder of 315.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 1240 from 1555 and we're left with 315.
Bring next digit (4) of the dividend behind the 315 and repeat the process: 3154 / 620

Step 5:
If we divide 3154 by 620, we get 5 and a remainder of 54.
Record the quotient 5 as the next digit in the result. 
Result so far: 125.0
Deduct 3100 from 3154 and we're left with 54.
Bring next digit (4) of the dividend behind the 54 and repeat the process: 544 / 620

Advancing to step 6:
When dividing 544 by 620, we get 0 with a remainder of 544.
Write down 0 as next digit of the result. 
Result so far: 1250.0
Subtract 0 from 544 to get 544.
Take the next digit (8) from the dividend and append it to 544, then repeat: 5448 / 620

Moving on to step 7:
5448 divided by 620 is 8 with a remainder of 488.
The number 8 becomes the next digit in our result. 
Result so far: 12508.0
Subtract 4960 from 5448 to get 488.
Append the next digit (0) from the dividend to 488 and continue with: 4880 / 620

Going ahead to step 8:
The number 620 fits into 4880 7 times, leaving a remainder of 540.
Write down 7 as next digit of the result. 
Result so far: 125087.0
Deduct 4340 from 4880 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 9:
5400 divided by 620 is 8 with a remainder of 440.
Put 8 as the next digit of the answer. 
Result so far: 125087.8
Subtract 4960 from 5400 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 10:
4400 divided by 620 is 7 with a remainder of 60.
The next digit of our result is 7. 
Result so far: 125087.87
Deduct 4340 from 4400 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 11:
600 divided by 620 is 0 with a remainder of 600.
Use 0 as the next digit of our solution. 
Result so far: 125087.87
Subtracting 0 from 600 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 12:
6000 divided by 620 is 9 with a remainder of 420.
The next digit of our result is 9. 
Result so far: 125087.8709
Subtract 5580 from 6000 to get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 13:
620 can be fit into 4200 6 times, resulting in a remainder of 480.
Write down 6 as next digit of the result. 
Result so far: 125087.87096
Deduct 3720 from 4200 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 14:
When dividing 4800 by 620, we get 7 with a remainder of 460.
The next digit of our result is 7. 
Result so far: 125087.870967
If we take 4340 away from 4800, we end up with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Advancing to step 15:
620 can be fit into 4600 7 times, resulting in a remainder of 260.
Record the quotient 7 as the next digit in the result. 
Result so far: 125087.8709677
Deduct 4340 from 4600 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

The final outcome is 125087.8709677, with a leftover of 2.6e-06.