We look at the division of 53705691 by 578 
The aim is to understand the frequency of 578 in 53705691.

Going ahead to step 1:
578 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 578

On to step 2:
When dividing 53 by 578, we get 0 with a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Bring next digit (7) of the dividend behind the 53 and repeat the process: 537 / 578

On to step 3:
537 divided by 578 is 0 with a remainder of 537.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 537, we get 537.
Include the next digit (0) from the dividend after 537, then repeat: 5370 / 578

Going ahead to step 4:
5370 divided by 578 is 9 with a remainder of 168.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 168 after subtracting 5202 from 5370.
Bring next digit (5) of the dividend behind the 168 and repeat the process: 1685 / 578

On to step 5:
1685 divided by 578 is 2 with a remainder of 529.
The next digit of our result is 2. 
Result so far: 92.0
The remainder is 529 after subtracting 1156 from 1685.
Include the next digit (6) from the dividend after 529, then repeat: 5296 / 578

On to step 6:
If we divide 5296 by 578, we get 9 and a remainder of 94.
Record the quotient 9 as the next digit in the result. 
Result so far: 929.0
Subtract 5202 from 5296 to get 94.
Fetch the next digit (9) from the dividend, attach it to 94 and continue: 949 / 578

Moving on to step 7:
578 can be fit into 949 1 times, resulting in a remainder of 371.
Use 1 as the next digit of our solution. 
Result so far: 9291.0
Subtracting 578 from 949 leaves us with 371.
Include the next digit (1) from the dividend after 371, then repeat: 3711 / 578

On to step 8:
The number 578 fits into 3711 6 times, leaving a remainder of 243.
Put 6 as the next digit of the answer. 
Result so far: 92916.0
Deduct 3468 from 3711 and we're left with 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

On to step 9:
578 can be fit into 2430 4 times, resulting in a remainder of 118.
Write down 4 as next digit of the result. 
Result so far: 92916.4
If we subtract 2312 from 2430, we get 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Going ahead to step 10:
If we divide 1180 by 578, we get 2 and a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 92916.42
Subtract 1156 from 1180 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
578 goes into 240 0 times with a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 92916.42
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
When dividing 2400 by 578, we get 4 with a remainder of 88.
Put 4 as the next digit of the answer. 
Result so far: 92916.4204
The remainder is 88 after subtracting 2312 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 13:
880 divided by 578 is 1 with a remainder of 302.
Put 1 as the next digit of the answer. 
Result so far: 92916.42041
Subtract 578 from 880 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Moving on to step 14:
If we divide 3020 by 578, we get 5 and a remainder of 130.
Record the quotient 5 as the next digit in the result. 
Result so far: 92916.420415
If we subtract 2890 from 3020, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 15:
When dividing 1300 by 578, we get 2 with a remainder of 144.
Write down 2 as next digit of the result. 
Result so far: 92916.4204152
The remainder is 144 after subtracting 1156 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Advancing to step 16:
1440 divided by 578 is 2 with a remainder of 284.
The number 2 becomes the next digit in our result. 
Result so far: 92916.42041522
The remainder is 284 after subtracting 1156 from 1440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

The quotient of the division is 92916.42041522, and the remainder is 2.84e-07.