73217768 ÷ 573 
We want to figure out the number of times 73217768 can be divided by 573.

On to step 1:
If we divide 7 by 573, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 573

On to step 2:
573 goes into 73 0 times with a remainder of 73.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 73 to get 73.
Take the next digit (2) from the dividend and append it to 73, then repeat: 732 / 573

Moving on to step 3:
573 can be fit into 732 1 times, resulting in a remainder of 159.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 573 from 732 leaves us with 159.
Grab the next digit (1) from the dividend, add it to 159, then carry on: 1591 / 573

Going ahead to step 4:
573 can be fit into 1591 2 times, resulting in a remainder of 445.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 1146 from 1591 and we're left with 445.
Grab the next digit (7) from the dividend, add it to 445, then carry on: 4457 / 573

Moving on to step 5:
4457 divided by 573 is 7 with a remainder of 446.
Use 7 as the next digit of our solution. 
Result so far: 127.0
If we take 4011 away from 4457, we end up with 446.
Fetch the next digit (7) from the dividend, attach it to 446 and continue: 4467 / 573

Step 6:
The number 573 fits into 4467 7 times, leaving a remainder of 456.
Record the quotient 7 as the next digit in the result. 
Result so far: 1277.0
Deduct 4011 from 4467 and we're left with 456.
Grab the next digit (6) from the dividend, add it to 456, then carry on: 4566 / 573

On to step 7:
When dividing 4566 by 573, we get 7 with a remainder of 555.
Write down 7 as next digit of the result. 
Result so far: 12777.0
If we take 4011 away from 4566, we end up with 555.
Include the next digit (8) from the dividend after 555, then repeat: 5558 / 573

Step 8:
If we divide 5558 by 573, we get 9 and a remainder of 401.
Write down 9 as next digit of the result. 
Result so far: 127779.0
If we subtract 5157 from 5558, we get 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Advancing to step 9:
If we divide 4010 by 573, we get 6 and a remainder of 572.
The next digit of our result is 6. 
Result so far: 127779.6
Subtract 3438 from 4010 to get 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Step 10:
The number 573 fits into 5720 9 times, leaving a remainder of 563.
Put 9 as the next digit of the answer. 
Result so far: 127779.69
Deduct 5157 from 5720 and we're left with 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Advancing to step 11:
When dividing 5630 by 573, we get 9 with a remainder of 473.
The number 9 becomes the next digit in our result. 
Result so far: 127779.699
Deduct 5157 from 5630 and we're left with 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Our division results in 127779.699 with a remaining 0.0473.