Let's divide 7578987 by 393
The aim is to understand the frequency of 393 in 7578987.

Let's proceed to step 1:
7 divided by 393 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 393

Advancing to step 2:
75 divided by 393 is 0 with a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 393

On to step 3:
If we divide 757 by 393, we get 1 and a remainder of 364.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 393 from 757 leaves us with 364.
Include the next digit (8) from the dividend after 364, then repeat: 3648 / 393

Going ahead to step 4:
If we divide 3648 by 393, we get 9 and a remainder of 111.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Deduct 3537 from 3648 and we're left with 111.
Take the next digit (9) from the dividend and append it to 111, then repeat: 1119 / 393

On to step 5:
393 goes into 1119 2 times with a remainder of 333.
The number 2 becomes the next digit in our result. 
Result so far: 192.0
The remainder is 333 after subtracting 786 from 1119.
Include the next digit (8) from the dividend after 333, then repeat: 3338 / 393

Step 6:
When dividing 3338 by 393, we get 8 with a remainder of 194.
The number 8 becomes the next digit in our result. 
Result so far: 1928.0
The remainder is 194 after subtracting 3144 from 3338.
Bring next digit (7) of the dividend behind the 194 and repeat the process: 1947 / 393

Advancing to step 7:
When dividing 1947 by 393, we get 4 with a remainder of 375.
The next digit of our result is 4. 
Result so far: 19284.0
If we subtract 1572 from 1947, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Let's proceed to step 8:
393 goes into 3750 9 times with a remainder of 213.
The number 9 becomes the next digit in our result. 
Result so far: 19284.9
Subtracting 3537 from 3750 leaves us with 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

On to step 9:
When dividing 2130 by 393, we get 5 with a remainder of 165.
Record the quotient 5 as the next digit in the result. 
Result so far: 19284.95
If we subtract 1965 from 2130, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

On to step 10:
1650 divided by 393 is 4 with a remainder of 78.
Use 4 as the next digit of our solution. 
Result so far: 19284.954
Subtracting 1572 from 1650 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 11:
If we divide 780 by 393, we get 1 and a remainder of 387.
The next digit of our result is 1. 
Result so far: 19284.9541
Subtract 393 from 780 to get 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Let's proceed to step 12:
If we divide 3870 by 393, we get 9 and a remainder of 333.
Use 9 as the next digit of our solution. 
Result so far: 19284.95419
If we take 3537 away from 3870, we end up with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Advancing to step 13:
393 can be fit into 3330 8 times, resulting in a remainder of 186.
The next digit of our result is 8. 
Result so far: 19284.954198
The remainder is 186 after subtracting 3144 from 3330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Let's proceed to step 14:
When dividing 1860 by 393, we get 4 with a remainder of 288.
The number 4 becomes the next digit in our result. 
Result so far: 19284.9541984
If we take 1572 away from 1860, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Going ahead to step 15:
If we divide 2880 by 393, we get 7 and a remainder of 129.
The number 7 becomes the next digit in our result. 
Result so far: 19284.95419847
The remainder is 129 after subtracting 2751 from 2880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

The final result is 19284.95419847 with a remainder of 1.29e-07.