12640245 ÷ 146 
The aim is to understand the frequency of 146 in 12640245.

Going ahead to step 1:
When dividing 1 by 146, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 146

Moving on to step 2:
When dividing 12 by 146, we get 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 146

On to step 3:
When dividing 126 by 146, we get 0 with a remainder of 126.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 126, we end up with 126.
Include the next digit (4) from the dividend after 126, then repeat: 1264 / 146

Step 4:
The number 146 fits into 1264 8 times, leaving a remainder of 96.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 1168 from 1264 and we're left with 96.
Append the next digit (0) from the dividend to 96 and continue with: 960 / 146

Moving on to step 5:
When dividing 960 by 146, we get 6 with a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 86.0
If we take 876 away from 960, we end up with 84.
Fetch the next digit (2) from the dividend, attach it to 84 and continue: 842 / 146

Let's proceed to step 6:
The number 146 fits into 842 5 times, leaving a remainder of 112.
The next digit of our result is 5. 
Result so far: 865.0
Deduct 730 from 842 and we're left with 112.
Grab the next digit (4) from the dividend, add it to 112, then carry on: 1124 / 146

Going ahead to step 7:
The number 146 fits into 1124 7 times, leaving a remainder of 102.
Put 7 as the next digit of the answer. 
Result so far: 8657.0
If we take 1022 away from 1124, we end up with 102.
Append the next digit (5) from the dividend to 102 and continue with: 1025 / 146

Going ahead to step 8:
1025 divided by 146 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 86577.0
If we take 1022 away from 1025, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
30 divided by 146 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 86577.0
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 10:
When dividing 300 by 146, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 86577.02
The remainder is 8 after subtracting 292 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
If we divide 80 by 146, we get 0 and a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 86577.02
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 12:
If we divide 800 by 146, we get 5 and a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 86577.0205
Deduct 730 from 800 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 13:
700 divided by 146 is 4 with a remainder of 116.
The number 4 becomes the next digit in our result. 
Result so far: 86577.02054
Deduct 584 from 700 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 14:
The number 146 fits into 1160 7 times, leaving a remainder of 138.
Put 7 as the next digit of the answer. 
Result so far: 86577.020547
If we subtract 1022 from 1160, we get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 15:
1380 divided by 146 is 9 with a remainder of 66.
Write down 9 as next digit of the result. 
Result so far: 86577.0205479
If we take 1314 away from 1380, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 16:
146 can be fit into 660 4 times, resulting in a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 86577.02054794
If we take 584 away from 660, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

After the division, we end up with 86577.02054794 and a remainder of 7.6e-08.