Let's divide 2178472 by 406
The aim is to understand the frequency of 406 in 2178472.

Moving on to step 1:
If we divide 2 by 406, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 406

On to step 2:
The number 406 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 406

Step 3:
When dividing 217 by 406, we get 0 with a remainder of 217.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 217 to get 217.
Fetch the next digit (8) from the dividend, attach it to 217 and continue: 2178 / 406

Step 4:
2178 divided by 406 is 5 with a remainder of 148.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 2030 from 2178 and we're left with 148.
Take the next digit (4) from the dividend and append it to 148, then repeat: 1484 / 406

Going ahead to step 5:
406 can be fit into 1484 3 times, resulting in a remainder of 266.
Use 3 as the next digit of our solution. 
Result so far: 53.0
If we subtract 1218 from 1484, we get 266.
Bring next digit (7) of the dividend behind the 266 and repeat the process: 2667 / 406

Let's proceed to step 6:
2667 divided by 406 is 6 with a remainder of 231.
Record the quotient 6 as the next digit in the result. 
Result so far: 536.0
If we take 2436 away from 2667, we end up with 231.
Take the next digit (2) from the dividend and append it to 231, then repeat: 2312 / 406

Moving on to step 7:
406 goes into 2312 5 times with a remainder of 282.
Put 5 as the next digit of the answer. 
Result so far: 5365.0
The remainder is 282 after subtracting 2030 from 2312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Advancing to step 8:
If we divide 2820 by 406, we get 6 and a remainder of 384.
Put 6 as the next digit of the answer. 
Result so far: 5365.6
If we subtract 2436 from 2820, we get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Going ahead to step 9:
406 goes into 3840 9 times with a remainder of 186.
The number 9 becomes the next digit in our result. 
Result so far: 5365.69
Subtracting 3654 from 3840 leaves us with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

On to step 10:
1860 divided by 406 is 4 with a remainder of 236.
The next digit of our result is 4. 
Result so far: 5365.694
Subtracting 1624 from 1860 leaves us with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 11:
If we divide 2360 by 406, we get 5 and a remainder of 330.
The number 5 becomes the next digit in our result. 
Result so far: 5365.6945
Deduct 2030 from 2360 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 12:
406 goes into 3300 8 times with a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 5365.69458
Subtracting 3248 from 3300 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 13:
The number 406 fits into 520 1 times, leaving a remainder of 114.
The number 1 becomes the next digit in our result. 
Result so far: 5365.694581
Subtracting 406 from 520 leaves us with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 14:
When dividing 1140 by 406, we get 2 with a remainder of 328.
Use 2 as the next digit of our solution. 
Result so far: 5365.6945812
Deduct 812 from 1140 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

On to step 15:
The number 406 fits into 3280 8 times, leaving a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 5365.69458128
If we subtract 3248 from 3280, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 5365.69458128 with a remainder of 3.2e-08.