73087128 ÷ 525 
Let's see how many times 525 fits into 73087128.

Step 1:
525 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 525

Step 2:
525 goes into 73 0 times with a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 73 and we're left with 73.
Grab the next digit (0) from the dividend, add it to 73, then carry on: 730 / 525

On to step 3:
730 divided by 525 is 1 with a remainder of 205.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 205 after subtracting 525 from 730.
Include the next digit (8) from the dividend after 205, then repeat: 2058 / 525

Advancing to step 4:
525 goes into 2058 3 times with a remainder of 483.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 483 after subtracting 1575 from 2058.
Include the next digit (7) from the dividend after 483, then repeat: 4837 / 525

Going ahead to step 5:
525 goes into 4837 9 times with a remainder of 112.
Write down 9 as next digit of the result. 
Result so far: 139.0
If we take 4725 away from 4837, we end up with 112.
Fetch the next digit (1) from the dividend, attach it to 112 and continue: 1121 / 525

Let's proceed to step 6:
When dividing 1121 by 525, we get 2 with a remainder of 71.
Record the quotient 2 as the next digit in the result. 
Result so far: 1392.0
If we subtract 1050 from 1121, we get 71.
Include the next digit (2) from the dividend after 71, then repeat: 712 / 525

Going ahead to step 7:
When dividing 712 by 525, we get 1 with a remainder of 187.
The next digit of our result is 1. 
Result so far: 13921.0
If we take 525 away from 712, we end up with 187.
Fetch the next digit (8) from the dividend, attach it to 187 and continue: 1878 / 525

Moving on to step 8:
If we divide 1878 by 525, we get 3 and a remainder of 303.
The number 3 becomes the next digit in our result. 
Result so far: 139213.0
If we subtract 1575 from 1878, we get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Step 9:
3030 divided by 525 is 5 with a remainder of 405.
The next digit of our result is 5. 
Result so far: 139213.5
If we take 2625 away from 3030, we end up with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

On to step 10:
525 can be fit into 4050 7 times, resulting in a remainder of 375.
The number 7 becomes the next digit in our result. 
Result so far: 139213.57
Subtract 3675 from 4050 to get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Let's proceed to step 11:
When dividing 3750 by 525, we get 7 with a remainder of 75.
Write down 7 as next digit of the result. 
Result so far: 139213.577
If we take 3675 away from 3750, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

After the division, we end up with 139213.577 and a remainder of 0.0075.