We're dividing 43972365 by 351 
The aim is to understand the frequency of 351 in 43972365.

Let's proceed to step 1:
If we divide 4 by 351, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 351

Step 2:
The number 351 fits into 43 0 times, leaving a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Include the next digit (9) from the dividend after 43, then repeat: 439 / 351

Moving on to step 3:
The number 351 fits into 439 1 times, leaving a remainder of 88.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 351 away from 439, we end up with 88.
Fetch the next digit (7) from the dividend, attach it to 88 and continue: 887 / 351

Let's proceed to step 4:
887 divided by 351 is 2 with a remainder of 185.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 702 away from 887, we end up with 185.
Append the next digit (2) from the dividend to 185 and continue with: 1852 / 351

Moving on to step 5:
The number 351 fits into 1852 5 times, leaving a remainder of 97.
Record the quotient 5 as the next digit in the result. 
Result so far: 125.0
Subtracting 1755 from 1852 leaves us with 97.
Grab the next digit (3) from the dividend, add it to 97, then carry on: 973 / 351

Going ahead to step 6:
The number 351 fits into 973 2 times, leaving a remainder of 271.
Record the quotient 2 as the next digit in the result. 
Result so far: 1252.0
Subtracting 702 from 973 leaves us with 271.
Fetch the next digit (6) from the dividend, attach it to 271 and continue: 2716 / 351

Going ahead to step 7:
351 goes into 2716 7 times with a remainder of 259.
The next digit of our result is 7. 
Result so far: 12527.0
Subtracting 2457 from 2716 leaves us with 259.
Include the next digit (5) from the dividend after 259, then repeat: 2595 / 351

Advancing to step 8:
If we divide 2595 by 351, we get 7 and a remainder of 138.
The number 7 becomes the next digit in our result. 
Result so far: 125277.0
The remainder is 138 after subtracting 2457 from 2595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Step 9:
351 goes into 1380 3 times with a remainder of 327.
Record the quotient 3 as the next digit in the result. 
Result so far: 125277.3
If we subtract 1053 from 1380, we get 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

On to step 10:
3270 divided by 351 is 9 with a remainder of 111.
Write down 9 as next digit of the result. 
Result so far: 125277.39
If we take 3159 away from 3270, we end up with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Moving on to step 11:
351 can be fit into 1110 3 times, resulting in a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 125277.393
Subtracting 1053 from 1110 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 12:
351 goes into 570 1 times with a remainder of 219.
The number 1 becomes the next digit in our result. 
Result so far: 125277.3931
Subtracting 351 from 570 leaves us with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Let's proceed to step 13:
351 goes into 2190 6 times with a remainder of 84.
The number 6 becomes the next digit in our result. 
Result so far: 125277.39316
The remainder is 84 after subtracting 2106 from 2190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 14:
The number 351 fits into 840 2 times, leaving a remainder of 138.
Record the quotient 2 as the next digit in the result. 
Result so far: 125277.393162
Subtract 702 from 840 to 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:
The number 351 fits into 1380 3 times, leaving a remainder of 327.
The next digit of our result is 3. 
Result so far: 125277.3931623
If we take 1053 away from 1380, we end up with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

On to step 16:
3270 divided by 351 is 9 with a remainder of 111.
Put 9 as the next digit of the answer. 
Result so far: 125277.39316239
If we subtract 3159 from 3270, we 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.

The final result is 125277.39316239 with a remainder of 1.11e-07.