We look at the division of 68603004 by 258 
The aim is to understand the frequency of 258 in 68603004.

Moving on to step 1:
6 divided by 258 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 258

On to step 2:
68 divided by 258 is 0 with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Fetch the next digit (6) from the dividend, attach it to 68 and continue: 686 / 258

Step 3:
258 goes into 686 2 times with a remainder of 170.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 516 from 686 and we're left with 170.
Fetch the next digit (0) from the dividend, attach it to 170 and continue: 1700 / 258

Let's proceed to step 4:
258 goes into 1700 6 times with a remainder of 152.
Put 6 as the next digit of the answer. 
Result so far: 26.0
The remainder is 152 after subtracting 1548 from 1700.
Fetch the next digit (3) from the dividend, attach it to 152 and continue: 1523 / 258

Advancing to step 5:
258 can be fit into 1523 5 times, resulting in a remainder of 233.
The number 5 becomes the next digit in our result. 
Result so far: 265.0
Subtracting 1290 from 1523 leaves us with 233.
Append the next digit (0) from the dividend to 233 and continue with: 2330 / 258

On to step 6:
The number 258 fits into 2330 9 times, leaving a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 2659.0
Deduct 2322 from 2330 and we're left with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 258

Going ahead to step 7:
The number 258 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 26590.0
Subtract 0 from 80 to get 80.
Bring next digit (4) of the dividend behind the 80 and repeat the process: 804 / 258

Let's proceed to step 8:
When dividing 804 by 258, we get 3 with a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 265903.0
If we take 774 away from 804, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
When dividing 300 by 258, we get 1 with a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 265903.1
Deduct 258 from 300 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 10:
If we divide 420 by 258, we get 1 and a remainder of 162.
Use 1 as the next digit of our solution. 
Result so far: 265903.11
Subtract 258 from 420 to get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

The quotient of the division is 265903.11, and the remainder is 0.162.