We look at the division of 55985041 by 406 
The aim is to understand the frequency of 406 in 55985041.

Step 1:
406 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 406

On to step 2:
When dividing 55 by 406, we get 0 with a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 55, we end up with 55.
Append the next digit (9) from the dividend to 55 and continue with: 559 / 406

Going ahead to step 3:
If we divide 559 by 406, we get 1 and a remainder of 153.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 153 after subtracting 406 from 559.
Grab the next digit (8) from the dividend, add it to 153, then carry on: 1538 / 406

Advancing to step 4:
1538 divided by 406 is 3 with a remainder of 320.
The next digit of our result is 3. 
Result so far: 13.0
If we subtract 1218 from 1538, we get 320.
Append the next digit (5) from the dividend to 320 and continue with: 3205 / 406

Going ahead to step 5:
406 can be fit into 3205 7 times, resulting in a remainder of 363.
The next digit of our result is 7. 
Result so far: 137.0
If we take 2842 away from 3205, we end up with 363.
Fetch the next digit (0) from the dividend, attach it to 363 and continue: 3630 / 406

On to step 6:
406 can be fit into 3630 8 times, resulting in a remainder of 382.
Put 8 as the next digit of the answer. 
Result so far: 1378.0
Subtract 3248 from 3630 to get 382.
Take the next digit (4) from the dividend and append it to 382, then repeat: 3824 / 406

Advancing to step 7:
406 goes into 3824 9 times with a remainder of 170.
The number 9 becomes the next digit in our result. 
Result so far: 13789.0
Deduct 3654 from 3824 and we're left with 170.
Take the next digit (1) from the dividend and append it to 170, then repeat: 1701 / 406

Step 8:
The number 406 fits into 1701 4 times, leaving a remainder of 77.
The number 4 becomes the next digit in our result. 
Result so far: 137894.0
The remainder is 77 after subtracting 1624 from 1701.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 9:
The number 406 fits into 770 1 times, leaving a remainder of 364.
Use 1 as the next digit of our solution. 
Result so far: 137894.1
Deduct 406 from 770 and we're left with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 10:
When dividing 3640 by 406, we get 8 with a remainder of 392.
Put 8 as the next digit of the answer. 
Result so far: 137894.18
Subtracting 3248 from 3640 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 11:
3920 divided by 406 is 9 with a remainder of 266.
Write down 9 as next digit of the result. 
Result so far: 137894.189
Subtracting 3654 from 3920 leaves us with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

On to step 12:
If we divide 2660 by 406, we get 6 and a remainder of 224.
Use 6 as the next digit of our solution. 
Result so far: 137894.1896
If we take 2436 away from 2660, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 13:
406 can be fit into 2240 5 times, resulting in a remainder of 210.
Put 5 as the next digit of the answer. 
Result so far: 137894.18965
The remainder is 210 after subtracting 2030 from 2240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 14:
406 goes into 2100 5 times with a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 137894.189655
If we subtract 2030 from 2100, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 137894.189655 with a remainder of 7e-06.