90613181 divided by 146 
The aim is to understand the frequency of 146 in 90613181.

Moving on to step 1:
146 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 146

Moving on to step 2:
When dividing 90 by 146, we get 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Bring next digit (6) of the dividend behind the 90 and repeat the process: 906 / 146

Let's proceed to step 3:
146 goes into 906 6 times with a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 876 from 906, we get 30.
Bring next digit (1) of the dividend behind the 30 and repeat the process: 301 / 146

On to step 4:
301 divided by 146 is 2 with a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 62.0
If we subtract 292 from 301, we get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 146

Step 5:
The number 146 fits into 93 0 times, leaving a remainder of 93.
Write down 0 as next digit of the result. 
Result so far: 620.0
The remainder is 93 after subtracting 0 from 93.
Bring next digit (1) of the dividend behind the 93 and repeat the process: 931 / 146

Moving on to step 6:
The number 146 fits into 931 6 times, leaving a remainder of 55.
Record the quotient 6 as the next digit in the result. 
Result so far: 6206.0
The remainder is 55 after subtracting 876 from 931.
Grab the next digit (8) from the dividend, add it to 55, then carry on: 558 / 146

Step 7:
If we divide 558 by 146, we get 3 and a remainder of 120.
Record the quotient 3 as the next digit in the result. 
Result so far: 62063.0
If we subtract 438 from 558, we get 120.
Include the next digit (1) from the dividend after 120, then repeat: 1201 / 146

Going ahead to step 8:
When dividing 1201 by 146, we get 8 with a remainder of 33.
Record the quotient 8 as the next digit in the result. 
Result so far: 620638.0
Subtracting 1168 from 1201 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 9:
146 goes into 330 2 times with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 620638.2
If we take 292 away from 330, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 10:
146 goes into 380 2 times with a remainder of 88.
Write down 2 as next digit of the result. 
Result so far: 620638.22
If we subtract 292 from 380, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Our division results in 620638.22 with a remaining 0.088.