Let's divide 60013374 by 90
The aim is to understand the frequency of 90 in 60013374.

Going ahead to step 1:
The number 90 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 90

Let's proceed to step 2:
If we divide 60 by 90, we get 0 and a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 60, we end up with 60.
Append the next digit (0) from the dividend to 60 and continue with: 600 / 90

Moving on to step 3:
When dividing 600 by 90, we get 6 with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 540 from 600, we get 60.
Include the next digit (1) from the dividend after 60, then repeat: 601 / 90

Going ahead to step 4:
601 divided by 90 is 6 with a remainder of 61.
The next digit of our result is 6. 
Result so far: 66.0
Subtract 540 from 601 to get 61.
Fetch the next digit (3) from the dividend, attach it to 61 and continue: 613 / 90

Step 5:
613 divided by 90 is 6 with a remainder of 73.
Use 6 as the next digit of our solution. 
Result so far: 666.0
Subtract 540 from 613 to get 73.
Take the next digit (3) from the dividend and append it to 73, then repeat: 733 / 90

Step 6:
The number 90 fits into 733 8 times, leaving a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 6668.0
Deduct 720 from 733 and we're left with 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 90

On to step 7:
When dividing 137 by 90, we get 1 with a remainder of 47.
Record the quotient 1 as the next digit in the result. 
Result so far: 66681.0
If we take 90 away from 137, we end up with 47.
Fetch the next digit (4) from the dividend, attach it to 47 and continue: 474 / 90

Advancing to step 8:
90 can be fit into 474 5 times, resulting in a remainder of 24.
Record the quotient 5 as the next digit in the result. 
Result so far: 666815.0
Subtracting 450 from 474 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
When dividing 240 by 90, we get 2 with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 666815.2
If we subtract 180 from 240, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
90 goes into 600 6 times with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 666815.26
Subtracting 540 from 600 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
If we divide 600 by 90, we get 6 and a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 666815.266
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The quotient of the division is 666815.266, and the remainder is 0.006.