We divide 643859 by 49
The aim is to understand the frequency of 49 in 643859.

Step 1:
49 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 49

Going ahead to step 2:
64 divided by 49 is 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 49 from 64 and we're left with 15.
Grab the next digit (3) from the dividend, add it to 15, then carry on: 153 / 49

Step 3:
When dividing 153 by 49, we get 3 with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 147 from 153 and we're left with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 49

Let's proceed to step 4:
49 goes into 68 1 times with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 131.0
The remainder is 19 after subtracting 49 from 68.
Include the next digit (5) from the dividend after 19, then repeat: 195 / 49

Let's proceed to step 5:
49 can be fit into 195 3 times, resulting in a remainder of 48.
Use 3 as the next digit of our solution. 
Result so far: 1313.0
Subtracting 147 from 195 leaves us with 48.
Bring next digit (9) of the dividend behind the 48 and repeat the process: 489 / 49

Going ahead to step 6:
If we divide 489 by 49, we get 9 and a remainder of 48.
The next digit of our result is 9. 
Result so far: 13139.0
Subtract 441 from 489 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 7:
When dividing 480 by 49, we get 9 with a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 13139.9
Subtracting 441 from 480 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 8:
When dividing 390 by 49, we get 7 with a remainder of 47.
The next digit of our result is 7. 
Result so far: 13139.97
Deduct 343 from 390 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 9:
If we divide 470 by 49, we get 9 and a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 13139.979
If we take 441 away from 470, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 10:
The number 49 fits into 290 5 times, leaving a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 13139.9795
If we take 245 away from 290, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 11:
If we divide 450 by 49, we get 9 and a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 13139.97959
If we take 441 away from 450, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 12:
49 can be fit into 90 1 times, resulting in a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 13139.979591
The remainder is 41 after subtracting 49 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 13:
49 can be fit into 410 8 times, resulting in a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 13139.9795918
Deduct 392 from 410 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 14:
49 goes into 180 3 times with a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 13139.97959183
If we subtract 147 from 180, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The quotient of the division is 13139.97959183, and the remainder is 3.3e-08.