We're dividing 343875 by 49 
We want to figure out the number of times 343875 can be divided by 49.

On to step 1:
The number 49 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 49

Moving on to step 2:
34 divided by 49 is 0 with a remainder of 34.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 34, we get 34.
Fetch the next digit (3) from the dividend, attach it to 34 and continue: 343 / 49

Going ahead to step 3:
49 goes into 343 7 times with a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 343 from 343 leaves us with 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 49

Moving on to step 4:
If we divide 8 by 49, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 70.0
If we take 0 away from 8, we end up with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 49

Moving on to step 5:
87 divided by 49 is 1 with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 701.0
If we subtract 49 from 87, we get 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 49

On to step 6:
49 can be fit into 385 7 times, resulting in a remainder of 42.
Record the quotient 7 as the next digit in the result. 
Result so far: 7017.0
Subtracting 343 from 385 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 7:
420 divided by 49 is 8 with a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 7017.8
Deduct 392 from 420 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 8:
When dividing 280 by 49, we get 5 with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 7017.85
Subtracting 245 from 280 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
When dividing 350 by 49, we get 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 7017.857
If we take 343 away from 350, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 10:
49 can be fit into 70 1 times, resulting in a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 7017.8571
Subtracting 49 from 70 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 11:
The number 49 fits into 210 4 times, leaving a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 7017.85714
Subtract 196 from 210 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.

On to step 12:
The number 49 fits into 140 2 times, leaving a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 7017.857142
Subtracting 98 from 140 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 13:
49 can be fit into 420 8 times, resulting in a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 7017.8571428
If we subtract 392 from 420, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 14:
The number 49 fits into 280 5 times, leaving a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 7017.85714285
Deduct 245 from 280 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 7017.85714285 with a remainder of 3.5e-08.