We're dividing 43378476 by 209 
The aim is to understand the frequency of 209 in 43378476.

Advancing to step 1:
4 divided by 209 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 209

Going ahead to step 2:
The number 209 fits into 43 0 times, leaving a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Include the next digit (3) from the dividend after 43, then repeat: 433 / 209

Moving on to step 3:
The number 209 fits into 433 2 times, leaving a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 15 after subtracting 418 from 433.
Include the next digit (7) from the dividend after 15, then repeat: 157 / 209

Moving on to step 4:
209 goes into 157 0 times with a remainder of 157.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Subtract 0 from 157 to get 157.
Grab the next digit (8) from the dividend, add it to 157, then carry on: 1578 / 209

Going ahead to step 5:
209 goes into 1578 7 times with a remainder of 115.
The next digit of our result is 7. 
Result so far: 207.0
If we take 1463 away from 1578, we end up with 115.
Take the next digit (4) from the dividend and append it to 115, then repeat: 1154 / 209

Going ahead to step 6:
209 goes into 1154 5 times with a remainder of 109.
The next digit of our result is 5. 
Result so far: 2075.0
If we take 1045 away from 1154, we end up with 109.
Take the next digit (7) from the dividend and append it to 109, then repeat: 1097 / 209

Let's proceed to step 7:
The number 209 fits into 1097 5 times, leaving a remainder of 52.
Write down 5 as next digit of the result. 
Result so far: 20755.0
Subtract 1045 from 1097 to get 52.
Bring next digit (6) of the dividend behind the 52 and repeat the process: 526 / 209

Moving on to step 8:
The number 209 fits into 526 2 times, leaving a remainder of 108.
Write down 2 as next digit of the result. 
Result so far: 207552.0
The remainder is 108 after subtracting 418 from 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Step 9:
209 can be fit into 1080 5 times, resulting in a remainder of 35.
The next digit of our result is 5. 
Result so far: 207552.5
Subtract 1045 from 1080 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 10:
When dividing 350 by 209, we get 1 with a remainder of 141.
Put 1 as the next digit of the answer. 
Result so far: 207552.51
If we take 209 away from 350, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Step 11:
When dividing 1410 by 209, we get 6 with a remainder of 156.
Write down 6 as next digit of the result. 
Result so far: 207552.516
Subtract 1254 from 1410 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Advancing to step 12:
209 can be fit into 1560 7 times, resulting in a remainder of 97.
Record the quotient 7 as the next digit in the result. 
Result so far: 207552.5167
If we subtract 1463 from 1560, we get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 13:
When dividing 970 by 209, we get 4 with a remainder of 134.
Use 4 as the next digit of our solution. 
Result so far: 207552.51674
The remainder is 134 after subtracting 836 from 970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Advancing to step 14:
If we divide 1340 by 209, we get 6 and a remainder of 86.
Put 6 as the next digit of the answer. 
Result so far: 207552.516746
If we take 1254 away from 1340, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 15:
If we divide 860 by 209, we get 4 and a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 207552.5167464
Subtracting 836 from 860 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 16:
240 divided by 209 is 1 with a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 207552.51674641
The remainder is 31 after subtracting 209 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The quotient of the division is 207552.51674641, and the remainder is 3.1e-08.