Let's divide 6432891 by 145
The aim is to understand the frequency of 145 in 6432891.

Advancing to step 1:
The number 145 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 (4) from the dividend to 6 and continue with: 64 / 145

Going ahead to step 2:
When dividing 64 by 145, we get 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 145

Going ahead to step 3:
If we divide 643 by 145, we get 4 and a remainder of 63.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 580 from 643, we get 63.
Fetch the next digit (2) from the dividend, attach it to 63 and continue: 632 / 145

Step 4:
The number 145 fits into 632 4 times, leaving a remainder of 52.
The next digit of our result is 4. 
Result so far: 44.0
If we take 580 away from 632, we end up with 52.
Include the next digit (8) from the dividend after 52, then repeat: 528 / 145

Advancing to step 5:
The number 145 fits into 528 3 times, leaving a remainder of 93.
The number 3 becomes the next digit in our result. 
Result so far: 443.0
The remainder is 93 after subtracting 435 from 528.
Bring next digit (9) of the dividend behind the 93 and repeat the process: 939 / 145

On to step 6:
145 goes into 939 6 times with a remainder of 69.
Use 6 as the next digit of our solution. 
Result so far: 4436.0
If we take 870 away from 939, we end up with 69.
Take the next digit (1) from the dividend and append it to 69, then repeat: 691 / 145

Advancing to step 7:
145 goes into 691 4 times with a remainder of 111.
The next digit of our result is 4. 
Result so far: 44364.0
Subtract 580 from 691 to get 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Going ahead to step 8:
If we divide 1110 by 145, we get 7 and a remainder of 95.
Put 7 as the next digit of the answer. 
Result so far: 44364.7
The remainder is 95 after subtracting 1015 from 1110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Going ahead to step 9:
145 goes into 950 6 times with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 44364.76
Subtracting 870 from 950 leaves us with 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 10:
If we divide 800 by 145, we get 5 and a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 44364.765
Subtract 725 from 800 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 11:
When dividing 750 by 145, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 44364.7655
The remainder is 25 after subtracting 725 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 44364.7655 with a remainder of 0.00025.