53555220 ÷ 779 
Let's see how many times 779 fits into 53555220.

Advancing to step 1:
779 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 779

Moving on to step 2:
When dividing 53 by 779, we get 0 with a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Bring next digit (5) of the dividend behind the 53 and repeat the process: 535 / 779

Step 3:
The number 779 fits into 535 0 times, leaving a remainder of 535.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 535 after subtracting 0 from 535.
Append the next digit (5) from the dividend to 535 and continue with: 5355 / 779

On to step 4:
When dividing 5355 by 779, we get 6 with a remainder of 681.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 4674 from 5355 and we're left with 681.
Include the next digit (5) from the dividend after 681, then repeat: 6815 / 779

Moving on to step 5:
779 can be fit into 6815 8 times, resulting in a remainder of 583.
The next digit of our result is 8. 
Result so far: 68.0
Subtract 6232 from 6815 to get 583.
Include the next digit (2) from the dividend after 583, then repeat: 5832 / 779

Step 6:
The number 779 fits into 5832 7 times, leaving a remainder of 379.
Use 7 as the next digit of our solution. 
Result so far: 687.0
The remainder is 379 after subtracting 5453 from 5832.
Bring next digit (2) of the dividend behind the 379 and repeat the process: 3792 / 779

Going ahead to step 7:
When dividing 3792 by 779, we get 4 with a remainder of 676.
Put 4 as the next digit of the answer. 
Result so far: 6874.0
Subtract 3116 from 3792 to get 676.
Grab the next digit (0) from the dividend, add it to 676, then carry on: 6760 / 779

Let's proceed to step 8:
When dividing 6760 by 779, we get 8 with a remainder of 528.
Use 8 as the next digit of our solution. 
Result so far: 68748.0
Deduct 6232 from 6760 and we're left with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Step 9:
The number 779 fits into 5280 6 times, leaving a remainder of 606.
The number 6 becomes the next digit in our result. 
Result so far: 68748.6
Deduct 4674 from 5280 and we're left with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Going ahead to step 10:
6060 divided by 779 is 7 with a remainder of 607.
Record the quotient 7 as the next digit in the result. 
Result so far: 68748.67
If we take 5453 away from 6060, we end up with 607.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6070, and continue the process.

Moving on to step 11:
The number 779 fits into 6070 7 times, leaving a remainder of 617.
Use 7 as the next digit of our solution. 
Result so far: 68748.677
The remainder is 617 after subtracting 5453 from 6070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6170, and continue the process.

The final outcome is 68748.677, with a leftover of 0.0617.