We look at the division of 18043390 by 446 
The aim is to understand the frequency of 446 in 18043390.

Advancing to step 1:
446 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 446

Moving on to step 2:
The number 446 fits into 18 0 times, leaving a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Append the next digit (0) from the dividend to 18 and continue with: 180 / 446

Going ahead to step 3:
When dividing 180 by 446, we get 0 with a remainder of 180.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 180 leaves us with 180.
Bring next digit (4) of the dividend behind the 180 and repeat the process: 1804 / 446

Let's proceed to step 4:
When dividing 1804 by 446, we get 4 with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 1784 from 1804 leaves us with 20.
Grab the next digit (3) from the dividend, add it to 20, then carry on: 203 / 446

Going ahead to step 5:
When dividing 203 by 446, we get 0 with a remainder of 203.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Deduct 0 from 203 and we're left with 203.
Include the next digit (3) from the dividend after 203, then repeat: 2033 / 446

On to step 6:
The number 446 fits into 2033 4 times, leaving a remainder of 249.
Record the quotient 4 as the next digit in the result. 
Result so far: 404.0
Subtracting 1784 from 2033 leaves us with 249.
Grab the next digit (9) from the dividend, add it to 249, then carry on: 2499 / 446

Step 7:
If we divide 2499 by 446, we get 5 and a remainder of 269.
Put 5 as the next digit of the answer. 
Result so far: 4045.0
Deduct 2230 from 2499 and we're left with 269.
Take the next digit (0) from the dividend and append it to 269, then repeat: 2690 / 446

Moving on to step 8:
If we divide 2690 by 446, we get 6 and a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 40456.0
Subtract 2676 from 2690 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 9:
446 goes into 140 0 times with a remainder of 140.
Write down 0 as next digit of the result. 
Result so far: 40456.0
Subtract 0 from 140 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 10:
The number 446 fits into 1400 3 times, leaving a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 40456.03
Subtract 1338 from 1400 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 11:
When dividing 620 by 446, we get 1 with a remainder of 174.
The number 1 becomes the next digit in our result. 
Result so far: 40456.031
The remainder is 174 after subtracting 446 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 12:
If we divide 1740 by 446, we get 3 and a remainder of 402.
Put 3 as the next digit of the answer. 
Result so far: 40456.0313
If we take 1338 away from 1740, we end up with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Going ahead to step 13:
If we divide 4020 by 446, we get 9 and a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 40456.03139
If we subtract 4014 from 4020, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 14:
446 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 40456.03139
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 15:
When dividing 600 by 446, we get 1 with a remainder of 154.
Record the quotient 1 as the next digit in the result. 
Result so far: 40456.0313901
Subtracting 446 from 600 leaves us with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Let's proceed to step 16:
If we divide 1540 by 446, we get 3 and a remainder of 202.
Put 3 as the next digit of the answer. 
Result so far: 40456.03139013
If we subtract 1338 from 1540, we get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

The final result is 40456.03139013 with a remainder of 2.02e-07.