We look at the division of 597489 by 670 
The aim is to understand the frequency of 670 in 597489.

Going ahead to step 1:
670 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 670

Moving on to step 2:
The number 670 fits into 59 0 times, leaving a remainder of 59.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 59 and we're left with 59.
Include the next digit (7) from the dividend after 59, then repeat: 597 / 670

On to step 3:
The number 670 fits into 597 0 times, leaving a remainder of 597.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 597 to get 597.
Grab the next digit (4) from the dividend, add it to 597, then carry on: 5974 / 670

Going ahead to step 4:
The number 670 fits into 5974 8 times, leaving a remainder of 614.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 614 after subtracting 5360 from 5974.
Append the next digit (8) from the dividend to 614 and continue with: 6148 / 670

Let's proceed to step 5:
If we divide 6148 by 670, we get 9 and a remainder of 118.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
Subtracting 6030 from 6148 leaves us with 118.
Fetch the next digit (9) from the dividend, attach it to 118 and continue: 1189 / 670

Going ahead to step 6:
When dividing 1189 by 670, we get 1 with a remainder of 519.
Write down 1 as next digit of the result. 
Result so far: 891.0
Subtracting 670 from 1189 leaves us with 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

Advancing to step 7:
670 goes into 5190 7 times with a remainder of 500.
The next digit of our result is 7. 
Result so far: 891.7
Deduct 4690 from 5190 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 8:
When dividing 5000 by 670, we get 7 with a remainder of 310.
Record the quotient 7 as the next digit in the result. 
Result so far: 891.77
Subtracting 4690 from 5000 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The final result is 891.77 with a remainder of 0.31.