We look at the division of 73163302 by 515 
We want to figure out the number of times 73163302 can be divided by 515.

Advancing to step 1:
When dividing 7 by 515, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 515

Going ahead to step 2:
The number 515 fits into 73 0 times, leaving a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 73 to get 73.
Fetch the next digit (1) from the dividend, attach it to 73 and continue: 731 / 515

Step 3:
When dividing 731 by 515, we get 1 with a remainder of 216.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 515 from 731 and we're left with 216.
Include the next digit (6) from the dividend after 216, then repeat: 2166 / 515

Moving on to step 4:
515 goes into 2166 4 times with a remainder of 106.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Deduct 2060 from 2166 and we're left with 106.
Grab the next digit (3) from the dividend, add it to 106, then carry on: 1063 / 515

Step 5:
515 can be fit into 1063 2 times, resulting in a remainder of 33.
Put 2 as the next digit of the answer. 
Result so far: 142.0
Subtracting 1030 from 1063 leaves us with 33.
Take the next digit (3) from the dividend and append it to 33, then repeat: 333 / 515

On to step 6:
333 divided by 515 is 0 with a remainder of 333.
Put 0 as the next digit of the answer. 
Result so far: 1420.0
The remainder is 333 after subtracting 0 from 333.
Grab the next digit (0) from the dividend, add it to 333, then carry on: 3330 / 515

Going ahead to step 7:
If we divide 3330 by 515, we get 6 and a remainder of 240.
Put 6 as the next digit of the answer. 
Result so far: 14206.0
Subtract 3090 from 3330 to get 240.
Fetch the next digit (2) from the dividend, attach it to 240 and continue: 2402 / 515

Step 8:
When dividing 2402 by 515, we get 4 with a remainder of 342.
The number 4 becomes the next digit in our result. 
Result so far: 142064.0
The remainder is 342 after subtracting 2060 from 2402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Moving on to step 9:
When dividing 3420 by 515, we get 6 with a remainder of 330.
The number 6 becomes the next digit in our result. 
Result so far: 142064.6
Deduct 3090 from 3420 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 10:
515 can be fit into 3300 6 times, resulting in a remainder of 210.
Use 6 as the next digit of our solution. 
Result so far: 142064.66
If we take 3090 away from 3300, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Our division results in 142064.66 with a remaining 0.21.