We're dividing 52666368 by 87 
We want to figure out the number of times 52666368 can be divided by 87.

On to step 1:
If we divide 5 by 87, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 87

Step 2:
87 goes into 52 0 times with a remainder of 52.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Fetch the next digit (6) from the dividend, attach it to 52 and continue: 526 / 87

On to step 3:
If we divide 526 by 87, we get 6 and a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 522 from 526 and we're left with 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 87

Advancing to step 4:
If we divide 46 by 87, we get 0 and a remainder of 46.
The next digit of our result is 0. 
Result so far: 60.0
Deduct 0 from 46 and we're left with 46.
Append the next digit (6) from the dividend to 46 and continue with: 466 / 87

Advancing to step 5:
87 can be fit into 466 5 times, resulting in a remainder of 31.
Record the quotient 5 as the next digit in the result. 
Result so far: 605.0
Subtract 435 from 466 to get 31.
Include the next digit (3) from the dividend after 31, then repeat: 313 / 87

Moving on to step 6:
313 divided by 87 is 3 with a remainder of 52.
Use 3 as the next digit of our solution. 
Result so far: 6053.0
Subtract 261 from 313 to get 52.
Fetch the next digit (6) from the dividend, attach it to 52 and continue: 526 / 87

Advancing to step 7:
If we divide 526 by 87, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 60536.0
If we subtract 522 from 526, we get 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 87

Going ahead to step 8:
When dividing 48 by 87, we get 0 with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 605360.0
The remainder is 48 after subtracting 0 from 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
480 divided by 87 is 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 605360.5
Subtracting 435 from 480 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
87 can be fit into 450 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 605360.55
Deduct 435 from 450 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

After the division, we end up with 605360.55 and a remainder of 0.015.