We divide 546422 by 45
The aim is to understand the frequency of 45 in 546422.

Step 1:
If we divide 5 by 45, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 45

Advancing to step 2:
54 divided by 45 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 45 away from 54, we end up with 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 45

Step 3:
The number 45 fits into 96 2 times, leaving a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 90 from 96 to get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 45

Step 4:
The number 45 fits into 64 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 121.0
The remainder is 19 after subtracting 45 from 64.
Append the next digit (2) from the dividend to 19 and continue with: 192 / 45

Step 5:
If we divide 192 by 45, we get 4 and a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 1214.0
Subtract 180 from 192 to get 12.
Bring next digit (2) of the dividend behind the 12 and repeat the process: 122 / 45

Moving on to step 6:
122 divided by 45 is 2 with a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 12142.0
Deduct 90 from 122 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 7:
The number 45 fits into 320 7 times, leaving a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 12142.7
If we take 315 away from 320, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
If we divide 50 by 45, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 12142.71
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
45 can be fit into 50 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 12142.711
If we take 45 away from 50, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 12142.711 and a remainder of 0.0005.