We divide 343985 by 25
Our goal is to divide 343985 by 25.

Step 1:
3 divided by 25 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 25

Step 2:
When dividing 34 by 25, we get 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 25 from 34 and we're left with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 25

Moving on to step 3:
If we divide 93 by 25, we get 3 and a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 75 from 93, we get 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 25

Moving on to step 4:
When dividing 189 by 25, we get 7 with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 137.0
The remainder is 14 after subtracting 175 from 189.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 25

Advancing to step 5:
The number 25 fits into 148 5 times, leaving a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 1375.0
Deduct 125 from 148 and we're left with 23.
Grab the next digit (5) from the dividend, add it to 23, then carry on: 235 / 25

Advancing to step 6:
The number 25 fits into 235 9 times, leaving a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 13759.0
Deduct 225 from 235 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
The number 25 fits into 100 4 times, leaving a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 13759.4
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
25 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 13759.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 13759.4
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 13759.4 and a remainder of 0.0.