We look at the division of 71897907 by 406 
The aim is to understand the frequency of 406 in 71897907.

Let's proceed to step 1:
The number 406 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 406

Let's proceed to step 2:
When dividing 71 by 406, we get 0 with a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Append the next digit (8) from the dividend to 71 and continue with: 718 / 406

Moving on to step 3:
If we divide 718 by 406, we get 1 and a remainder of 312.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 406 away from 718, we end up with 312.
Grab the next digit (9) from the dividend, add it to 312, then carry on: 3129 / 406

Going ahead to step 4:
3129 divided by 406 is 7 with a remainder of 287.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtract 2842 from 3129 to get 287.
Fetch the next digit (7) from the dividend, attach it to 287 and continue: 2877 / 406

Advancing to step 5:
406 can be fit into 2877 7 times, resulting in a remainder of 35.
The next digit of our result is 7. 
Result so far: 177.0
If we take 2842 away from 2877, we end up with 35.
Take the next digit (9) from the dividend and append it to 35, then repeat: 359 / 406

On to step 6:
359 divided by 406 is 0 with a remainder of 359.
The number 0 becomes the next digit in our result. 
Result so far: 1770.0
The remainder is 359 after subtracting 0 from 359.
Grab the next digit (0) from the dividend, add it to 359, then carry on: 3590 / 406

Let's proceed to step 7:
When dividing 3590 by 406, we get 8 with a remainder of 342.
The next digit of our result is 8. 
Result so far: 17708.0
The remainder is 342 after subtracting 3248 from 3590.
Append the next digit (7) from the dividend to 342 and continue with: 3427 / 406

On to step 8:
406 can be fit into 3427 8 times, resulting in a remainder of 179.
Write down 8 as next digit of the result. 
Result so far: 177088.0
If we subtract 3248 from 3427, we get 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Step 9:
406 can be fit into 1790 4 times, resulting in a remainder of 166.
The number 4 becomes the next digit in our result. 
Result so far: 177088.4
If we subtract 1624 from 1790, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 10:
If we divide 1660 by 406, we get 4 and a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 177088.44
If we subtract 1624 from 1660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The quotient of the division is 177088.44, and the remainder is 0.036.