We're dividing 15015371 by 146 
The aim is to understand the frequency of 146 in 15015371.

Let's proceed to step 1:
If we divide 1 by 146, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 146

On to step 2:
When dividing 15 by 146, we get 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Take the next digit (0) from the dividend and append it to 15, then repeat: 150 / 146

On to step 3:
146 can be fit into 150 1 times, resulting in a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 146 from 150 and we're left with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 146

Moving on to step 4:
If we divide 41 by 146, we get 0 and a remainder of 41.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 41 leaves us with 41.
Append the next digit (5) from the dividend to 41 and continue with: 415 / 146

Let's proceed to step 5:
If we divide 415 by 146, we get 2 and a remainder of 123.
Write down 2 as next digit of the result. 
Result so far: 102.0
Deduct 292 from 415 and we're left with 123.
Grab the next digit (3) from the dividend, add it to 123, then carry on: 1233 / 146

Let's proceed to step 6:
146 goes into 1233 8 times with a remainder of 65.
Put 8 as the next digit of the answer. 
Result so far: 1028.0
The remainder is 65 after subtracting 1168 from 1233.
Fetch the next digit (7) from the dividend, attach it to 65 and continue: 657 / 146

Step 7:
If we divide 657 by 146, we get 4 and a remainder of 73.
Use 4 as the next digit of our solution. 
Result so far: 10284.0
Subtracting 584 from 657 leaves us with 73.
Take the next digit (1) from the dividend and append it to 73, then repeat: 731 / 146

Advancing to step 8:
When dividing 731 by 146, we get 5 with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 102845.0
If we take 730 away from 731, 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.

Going ahead to step 9:
146 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 102845.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
146 can be fit into 100 0 times, resulting in a remainder of 100.
The next digit of our result is 0. 
Result so far: 102845.0
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The quotient of the division is 102845.0, and the remainder is 0.1.