We divide 87590649 by 520
The aim is to understand the frequency of 520 in 87590649.

Moving on to step 1:
8 divided by 520 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 520

Advancing to step 2:
If we divide 87 by 520, we get 0 and a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Fetch the next digit (5) from the dividend, attach it to 87 and continue: 875 / 520

Going ahead to step 3:
If we divide 875 by 520, we get 1 and a remainder of 355.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 520 from 875, we get 355.
Fetch the next digit (9) from the dividend, attach it to 355 and continue: 3559 / 520

Going ahead to step 4:
If we divide 3559 by 520, we get 6 and a remainder of 439.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtracting 3120 from 3559 leaves us with 439.
Fetch the next digit (0) from the dividend, attach it to 439 and continue: 4390 / 520

Moving on to step 5:
520 goes into 4390 8 times with a remainder of 230.
Write down 8 as next digit of the result. 
Result so far: 168.0
Subtract 4160 from 4390 to get 230.
Grab the next digit (6) from the dividend, add it to 230, then carry on: 2306 / 520

Let's proceed to step 6:
2306 divided by 520 is 4 with a remainder of 226.
Use 4 as the next digit of our solution. 
Result so far: 1684.0
If we subtract 2080 from 2306, we get 226.
Fetch the next digit (4) from the dividend, attach it to 226 and continue: 2264 / 520

Moving on to step 7:
When dividing 2264 by 520, we get 4 with a remainder of 184.
Put 4 as the next digit of the answer. 
Result so far: 16844.0
Subtracting 2080 from 2264 leaves us with 184.
Append the next digit (9) from the dividend to 184 and continue with: 1849 / 520

Let's proceed to step 8:
520 goes into 1849 3 times with a remainder of 289.
Record the quotient 3 as the next digit in the result. 
Result so far: 168443.0
Deduct 1560 from 1849 and we're left with 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Let's proceed to step 9:
When dividing 2890 by 520, we get 5 with a remainder of 290.
Write down 5 as next digit of the result. 
Result so far: 168443.5
Subtracting 2600 from 2890 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 10:
The number 520 fits into 2900 5 times, leaving a remainder of 300.
Write down 5 as next digit of the result. 
Result so far: 168443.55
If we subtract 2600 from 2900, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

After the division, we end up with 168443.55 and a remainder of 0.3.