99948401 divided by 406 
The aim is to understand the frequency of 406 in 99948401.

Going ahead to step 1:
If we divide 9 by 406, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 406

Advancing to step 2:
406 can be fit into 99 0 times, resulting in a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Bring next digit (9) of the dividend behind the 99 and repeat the process: 999 / 406

Moving on to step 3:
406 goes into 999 2 times with a remainder of 187.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 812 from 999 to get 187.
Fetch the next digit (4) from the dividend, attach it to 187 and continue: 1874 / 406

Moving on to step 4:
1874 divided by 406 is 4 with a remainder of 250.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
If we take 1624 away from 1874, we end up with 250.
Take the next digit (8) from the dividend and append it to 250, then repeat: 2508 / 406

On to step 5:
406 goes into 2508 6 times with a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 246.0
Subtract 2436 from 2508 to get 72.
Bring next digit (4) of the dividend behind the 72 and repeat the process: 724 / 406

Moving on to step 6:
724 divided by 406 is 1 with a remainder of 318.
Record the quotient 1 as the next digit in the result. 
Result so far: 2461.0
Deduct 406 from 724 and we're left with 318.
Include the next digit (0) from the dividend after 318, then repeat: 3180 / 406

Moving on to step 7:
406 can be fit into 3180 7 times, resulting in a remainder of 338.
The number 7 becomes the next digit in our result. 
Result so far: 24617.0
Subtract 2842 from 3180 to get 338.
Bring next digit (1) of the dividend behind the 338 and repeat the process: 3381 / 406

Going ahead to step 8:
When dividing 3381 by 406, we get 8 with a remainder of 133.
The next digit of our result is 8. 
Result so far: 246178.0
Deduct 3248 from 3381 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

On to step 9:
When dividing 1330 by 406, we get 3 with a remainder of 112.
Use 3 as the next digit of our solution. 
Result so far: 246178.3
The remainder is 112 after subtracting 1218 from 1330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 10:
The number 406 fits into 1120 2 times, leaving a remainder of 308.
The number 2 becomes the next digit in our result. 
Result so far: 246178.32
Subtracting 812 from 1120 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 11:
When dividing 3080 by 406, we get 7 with a remainder of 238.
Put 7 as the next digit of the answer. 
Result so far: 246178.327
If we take 2842 away from 3080, we end up with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 12:
When dividing 2380 by 406, we get 5 with a remainder of 350.
The number 5 becomes the next digit in our result. 
Result so far: 246178.3275
Deduct 2030 from 2380 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 13:
When dividing 3500 by 406, we get 8 with a remainder of 252.
Use 8 as the next digit of our solution. 
Result so far: 246178.32758
Subtract 3248 from 3500 to get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 14:
406 goes into 2520 6 times with a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 246178.327586
If we subtract 2436 from 2520, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 15:
406 can be fit into 840 2 times, resulting in a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 246178.3275862
Deduct 812 from 840 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 16:
280 divided by 406 is 0 with a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 246178.3275862
Subtract 0 from 280 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

The quotient of the division is 246178.3275862, and the remainder is 2.8e-07.