We divide 873663 by 58
The aim is to understand the frequency of 58 in 873663.

Going ahead to step 1:
If we divide 8 by 58, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 58

On to step 2:
When dividing 87 by 58, we get 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 29 after subtracting 58 from 87.
Include the next digit (3) from the dividend after 29, then repeat: 293 / 58

Going ahead to step 3:
The number 58 fits into 293 5 times, leaving a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 290 from 293 to get 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 58

Moving on to step 4:
36 divided by 58 is 0 with a remainder of 36.
Use 0 as the next digit of our solution. 
Result so far: 150.0
If we take 0 away from 36, we end up with 36.
Take the next digit (6) from the dividend and append it to 36, then repeat: 366 / 58

Moving on to step 5:
58 can be fit into 366 6 times, resulting in a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 1506.0
The remainder is 18 after subtracting 348 from 366.
Append the next digit (3) from the dividend to 18 and continue with: 183 / 58

Going ahead to step 6:
183 divided by 58 is 3 with a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 15063.0
Subtract 174 from 183 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
90 divided by 58 is 1 with a remainder of 32.
Use 1 as the next digit of our solution. 
Result so far: 15063.1
The remainder is 32 after subtracting 58 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 8:
If we divide 320 by 58, we get 5 and a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 15063.15
Deduct 290 from 320 and we're left 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.

Moving on to step 9:
When dividing 300 by 58, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 15063.155
If we take 290 away from 300, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 15063.155 and a remainder of 0.001.