Let's divide 143750 by 7
The aim is to understand the frequency of 7 in 143750.

Let's proceed to step 1:
When dividing 1 by 7, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 7

Let's proceed to step 2:
14 divided by 7 is 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 14 from 14 leaves us with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 7

On to step 3:
When dividing 3 by 7, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 7

Let's proceed to step 4:
The number 7 fits into 37 5 times, leaving a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 205.0
Deduct 35 from 37 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 7

Advancing to step 5:
7 can be fit into 25 3 times, resulting in a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 2053.0
Subtract 21 from 25 to get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 7

Going ahead to step 6:
7 can be fit into 40 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 20535.0
The remainder is 5 after subtracting 35 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
50 divided by 7 is 7 with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 20535.7
The remainder is 1 after subtracting 49 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 8:
7 can be fit into 10 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 20535.71
Subtract 7 from 10 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 9:
If we divide 30 by 7, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 20535.714
The remainder is 2 after subtracting 28 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
If we divide 20 by 7, we get 2 and a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 20535.7142
Subtract 14 from 20 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
7 can be fit into 60 8 times, resulting in a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 20535.71428
The remainder is 4 after subtracting 56 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
If we divide 40 by 7, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 20535.714285
Deduct 35 from 40 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 13:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 20535.7142857
Deduct 49 from 50 and we're left 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.

Advancing to step 14:
The number 7 fits into 10 1 times, leaving a remainder of 3.
The next digit of our result is 1. 
Result so far: 20535.71428571
Deduct 7 from 10 and we're left 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.

The quotient of the division is 20535.71428571, and the remainder is 3e-09.