75815997 ÷ 549 
We want to divide 75815997 by 549.

Advancing to step 1:
When dividing 7 by 549, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 549

Step 2:
549 can be fit into 75 0 times, resulting in a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 75 leaves us with 75.
Fetch the next digit (8) from the dividend, attach it to 75 and continue: 758 / 549

Going ahead to step 3:
The number 549 fits into 758 1 times, leaving a remainder of 209.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 209 after subtracting 549 from 758.
Fetch the next digit (1) from the dividend, attach it to 209 and continue: 2091 / 549

Advancing to step 4:
When dividing 2091 by 549, we get 3 with a remainder of 444.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 1647 away from 2091, we end up with 444.
Fetch the next digit (5) from the dividend, attach it to 444 and continue: 4445 / 549

Moving on to step 5:
549 can be fit into 4445 8 times, resulting in a remainder of 53.
Put 8 as the next digit of the answer. 
Result so far: 138.0
Subtract 4392 from 4445 to get 53.
Include the next digit (9) from the dividend after 53, then repeat: 539 / 549

On to step 6:
If we divide 539 by 549, we get 0 and a remainder of 539.
The number 0 becomes the next digit in our result. 
Result so far: 1380.0
Deduct 0 from 539 and we're left with 539.
Append the next digit (9) from the dividend to 539 and continue with: 5399 / 549

Going ahead to step 7:
549 can be fit into 5399 9 times, resulting in a remainder of 458.
Put 9 as the next digit of the answer. 
Result so far: 13809.0
Subtract 4941 from 5399 to get 458.
Grab the next digit (7) from the dividend, add it to 458, then carry on: 4587 / 549

Going ahead to step 8:
549 can be fit into 4587 8 times, resulting in a remainder of 195.
Write down 8 as next digit of the result. 
Result so far: 138098.0
If we take 4392 away from 4587, we end up with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Moving on to step 9:
If we divide 1950 by 549, we get 3 and a remainder of 303.
The number 3 becomes the next digit in our result. 
Result so far: 138098.3
If we take 1647 away from 1950, we end up with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Moving on to step 10:
If we divide 3030 by 549, we get 5 and a remainder of 285.
Put 5 as the next digit of the answer. 
Result so far: 138098.35
The remainder is 285 after subtracting 2745 from 3030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Let's proceed to step 11:
When dividing 2850 by 549, we get 5 with a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 138098.355
Subtracting 2745 from 2850 leaves us with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

The final result is 138098.355 with a remainder of 0.0105.