We look at the division of 61917880 by 898 
The aim is to understand the frequency of 898 in 61917880.

Step 1:
898 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 898

Advancing to step 2:
The number 898 fits into 61 0 times, leaving a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 61, we end up with 61.
Include the next digit (9) from the dividend after 61, then repeat: 619 / 898

Let's proceed to step 3:
619 divided by 898 is 0 with a remainder of 619.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 619, we get 619.
Include the next digit (1) from the dividend after 619, then repeat: 6191 / 898

On to step 4:
6191 divided by 898 is 6 with a remainder of 803.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 5388 from 6191 and we're left with 803.
Append the next digit (7) from the dividend to 803 and continue with: 8037 / 898

On to step 5:
The number 898 fits into 8037 8 times, leaving a remainder of 853.
Record the quotient 8 as the next digit in the result. 
Result so far: 68.0
If we take 7184 away from 8037, we end up with 853.
Append the next digit (8) from the dividend to 853 and continue with: 8538 / 898

On to step 6:
898 goes into 8538 9 times with a remainder of 456.
The next digit of our result is 9. 
Result so far: 689.0
Deduct 8082 from 8538 and we're left with 456.
Fetch the next digit (8) from the dividend, attach it to 456 and continue: 4568 / 898

Step 7:
If we divide 4568 by 898, we get 5 and a remainder of 78.
The next digit of our result is 5. 
Result so far: 6895.0
Subtracting 4490 from 4568 leaves us with 78.
Bring next digit (0) of the dividend behind the 78 and repeat the process: 780 / 898

Step 8:
898 goes into 780 0 times with a remainder of 780.
Put 0 as the next digit of the answer. 
Result so far: 68950.0
Deduct 0 from 780 and we're left with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Step 9:
If we divide 7800 by 898, we get 8 and a remainder of 616.
Use 8 as the next digit of our solution. 
Result so far: 68950.8
Deduct 7184 from 7800 and we're left with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Going ahead to step 10:
If we divide 6160 by 898, we get 6 and a remainder of 772.
Put 6 as the next digit of the answer. 
Result so far: 68950.86
If we subtract 5388 from 6160, we get 772.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7720, and continue the process.

Moving on to step 11:
898 goes into 7720 8 times with a remainder of 536.
The number 8 becomes the next digit in our result. 
Result so far: 68950.868
If we subtract 7184 from 7720, we get 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 12:
If we divide 5360 by 898, we get 5 and a remainder of 870.
Write down 5 as next digit of the result. 
Result so far: 68950.8685
If we subtract 4490 from 5360, we get 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8700, and continue the process.

Going ahead to step 13:
898 can be fit into 8700 9 times, resulting in a remainder of 618.
Record the quotient 9 as the next digit in the result. 
Result so far: 68950.86859
If we take 8082 away from 8700, we end up with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Step 14:
If we divide 6180 by 898, we get 6 and a remainder of 792.
Put 6 as the next digit of the answer. 
Result so far: 68950.868596
Subtracting 5388 from 6180 leaves us with 792.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7920, and continue the process.

Moving on to step 15:
If we divide 7920 by 898, we get 8 and a remainder of 736.
The next digit of our result is 8. 
Result so far: 68950.8685968
If we subtract 7184 from 7920, we get 736.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

Advancing to step 16:
7360 divided by 898 is 8 with a remainder of 176.
The next digit of our result is 8. 
Result so far: 68950.86859688
Subtract 7184 from 7360 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

The final outcome is 68950.86859688, with a leftover of 1.76e-07.