Let's divide 90253369 by 12
We want to figure out the number of times 90253369 can be divided by 12.

Moving on to step 1:
9 divided by 12 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 12

Step 2:
12 goes into 90 7 times with a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 84 from 90 leaves us with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 12

Going ahead to step 3:
12 can be fit into 62 5 times, resulting in a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 75.0
Deduct 60 from 62 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 12

Let's proceed to step 4:
The number 12 fits into 25 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 752.0
Subtract 24 from 25 to get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 12

Going ahead to step 5:
12 can be fit into 13 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 7521.0
Subtracting 12 from 13 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 12

Step 6:
If we divide 13 by 12, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 75211.0
If we subtract 12 from 13, we get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 12

Advancing to step 7:
If we divide 16 by 12, we get 1 and a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 752111.0
Deduct 12 from 16 and we're left with 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 12

Let's proceed to step 8:
The number 12 fits into 49 4 times, leaving a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 7521114.0
If we take 48 away from 49, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 9:
10 divided by 12 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 7521114.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
12 can be fit into 100 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 7521114.08
If we take 96 away from 100, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 11:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 7521114.083
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 12:
When dividing 40 by 12, we get 3 with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 7521114.0833
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 7521114.0833, with a leftover of 4e-05.