We look at the division of 38524485 by 143 
The aim is to understand the frequency of 143 in 38524485.

Step 1:
The number 143 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 143

Let's proceed to step 2:
If we divide 38 by 143, we get 0 and a remainder of 38.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Fetch the next digit (5) from the dividend, attach it to 38 and continue: 385 / 143

Advancing to step 3:
143 goes into 385 2 times with a remainder of 99.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 286 from 385 and we're left with 99.
Bring next digit (2) of the dividend behind the 99 and repeat the process: 992 / 143

Advancing to step 4:
When dividing 992 by 143, we get 6 with a remainder of 134.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
Subtracting 858 from 992 leaves us with 134.
Grab the next digit (4) from the dividend, add it to 134, then carry on: 1344 / 143

Going ahead to step 5:
The number 143 fits into 1344 9 times, leaving a remainder of 57.
The next digit of our result is 9. 
Result so far: 269.0
Subtracting 1287 from 1344 leaves us with 57.
Take the next digit (4) from the dividend and append it to 57, then repeat: 574 / 143

Step 6:
When dividing 574 by 143, we get 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 2694.0
Deduct 572 from 574 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 143

Step 7:
The number 143 fits into 28 0 times, leaving a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 26940.0
Subtract 0 from 28 to get 28.
Bring next digit (5) of the dividend behind the 28 and repeat the process: 285 / 143

Going ahead to step 8:
143 goes into 285 1 times with a remainder of 142.
The next digit of our result is 1. 
Result so far: 269401.0
If we subtract 143 from 285, we get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Advancing to step 9:
143 can be fit into 1420 9 times, resulting in a remainder of 133.
Put 9 as the next digit of the answer. 
Result so far: 269401.9
If we subtract 1287 from 1420, we get 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Step 10:
The number 143 fits into 1330 9 times, leaving a remainder of 43.
Use 9 as the next digit of our solution. 
Result so far: 269401.99
If we subtract 1287 from 1330, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The final outcome is 269401.99, with a leftover of 0.043.