We look at the division of 90405515 by 93 
We're looking to find how many times 93 goes into 90405515.

Step 1:
93 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 93

Let's proceed to step 2:
The number 93 fits into 90 0 times, leaving a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Bring next digit (4) of the dividend behind the 90 and repeat the process: 904 / 93

Moving on to step 3:
93 goes into 904 9 times with a remainder of 67.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtract 837 from 904 to get 67.
Include the next digit (0) from the dividend after 67, then repeat: 670 / 93

Moving on to step 4:
93 can be fit into 670 7 times, resulting in a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 97.0
If we take 651 away from 670, we end up with 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 93

On to step 5:
195 divided by 93 is 2 with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 972.0
Deduct 186 from 195 and we're left with 9.
Bring next digit (5) of the dividend behind the 9 and repeat the process: 95 / 93

Moving on to step 6:
When dividing 95 by 93, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 9721.0
If we subtract 93 from 95, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 93

Moving on to step 7:
When dividing 21 by 93, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 97210.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 93

Going ahead to step 8:
When dividing 215 by 93, we get 2 with a remainder of 29.
Put 2 as the next digit of the answer. 
Result so far: 972102.0
If we take 186 away from 215, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 9:
The number 93 fits into 290 3 times, leaving a remainder of 11.
The next digit of our result is 3. 
Result so far: 972102.3
Subtract 279 from 290 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 10:
93 goes into 110 1 times with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 972102.31
The remainder is 17 after subtracting 93 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 11:
The number 93 fits into 170 1 times, leaving a remainder of 77.
Record the quotient 1 as the next digit in the result. 
Result so far: 972102.311
If we take 93 away from 170, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

The final outcome is 972102.311, with a leftover of 0.0077.