3123503 ÷ 433 
The aim is to understand the frequency of 433 in 3123503.

On to step 1:
433 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 433

Going ahead to step 2:
If we divide 31 by 433, we get 0 and a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Bring next digit (2) of the dividend behind the 31 and repeat the process: 312 / 433

Advancing to step 3:
If we divide 312 by 433, we get 0 and a remainder of 312.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 312 leaves us with 312.
Take the next digit (3) from the dividend and append it to 312, then repeat: 3123 / 433

Going ahead to step 4:
433 can be fit into 3123 7 times, resulting in a remainder of 92.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 3031 from 3123, we get 92.
Grab the next digit (5) from the dividend, add it to 92, then carry on: 925 / 433

Going ahead to step 5:
433 goes into 925 2 times with a remainder of 59.
Write down 2 as next digit of the result. 
Result so far: 72.0
If we take 866 away from 925, we end up with 59.
Bring next digit (0) of the dividend behind the 59 and repeat the process: 590 / 433

On to step 6:
The number 433 fits into 590 1 times, leaving a remainder of 157.
The next digit of our result is 1. 
Result so far: 721.0
If we take 433 away from 590, we end up with 157.
Take the next digit (3) from the dividend and append it to 157, then repeat: 1573 / 433

On to step 7:
433 goes into 1573 3 times with a remainder of 274.
Put 3 as the next digit of the answer. 
Result so far: 7213.0
If we subtract 1299 from 1573, we get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

On to step 8:
When dividing 2740 by 433, we get 6 with a remainder of 142.
Record the quotient 6 as the next digit in the result. 
Result so far: 7213.6
If we take 2598 away from 2740, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Advancing to step 9:
The number 433 fits into 1420 3 times, leaving a remainder of 121.
Write down 3 as next digit of the result. 
Result so far: 7213.63
If we subtract 1299 from 1420, we get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Going ahead to step 10:
1210 divided by 433 is 2 with a remainder of 344.
Use 2 as the next digit of our solution. 
Result so far: 7213.632
Deduct 866 from 1210 and we're left with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 11:
3440 divided by 433 is 7 with a remainder of 409.
The next digit of our result is 7. 
Result so far: 7213.6327
If we subtract 3031 from 3440, we get 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Moving on to step 12:
When dividing 4090 by 433, we get 9 with a remainder of 193.
Write down 9 as next digit of the result. 
Result so far: 7213.63279
Deduct 3897 from 4090 and we're left with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Advancing to step 13:
1930 divided by 433 is 4 with a remainder of 198.
The next digit of our result is 4. 
Result so far: 7213.632794
Deduct 1732 from 1930 and we're left with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Moving on to step 14:
The number 433 fits into 1980 4 times, leaving a remainder of 248.
Write down 4 as next digit of the result. 
Result so far: 7213.6327944
Subtracting 1732 from 1980 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

After the division, we end up with 7213.6327944 and a remainder of 2.48e-06.