We divide 343951 by 87
We want to figure out the number of times 343951 can be divided by 87.

Advancing to step 1:
The number 87 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 87

Step 2:
When dividing 34 by 87, we get 0 with a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Append the next digit (3) from the dividend to 34 and continue with: 343 / 87

Advancing to step 3:
343 divided by 87 is 3 with a remainder of 82.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 82 after subtracting 261 from 343.
Include the next digit (9) from the dividend after 82, then repeat: 829 / 87

Step 4:
The number 87 fits into 829 9 times, leaving a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 39.0
Subtract 783 from 829 to get 46.
Bring next digit (5) of the dividend behind the 46 and repeat the process: 465 / 87

Step 5:
465 divided by 87 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 395.0
If we subtract 435 from 465, we get 30.
Take the next digit (1) from the dividend and append it to 30, then repeat: 301 / 87

Advancing to step 6:
When dividing 301 by 87, we get 3 with a remainder of 40.
The number 3 becomes the next digit in our result. 
Result so far: 3953.0
If we take 261 away from 301, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 7:
When dividing 400 by 87, we get 4 with a remainder of 52.
Use 4 as the next digit of our solution. 
Result so far: 3953.4
Subtract 348 from 400 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 8:
87 goes into 520 5 times with a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 3953.45
Deduct 435 from 520 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 9:
If we divide 850 by 87, we get 9 and a remainder of 67.
The next digit of our result is 9. 
Result so far: 3953.459
The remainder is 67 after subtracting 783 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 10:
670 divided by 87 is 7 with a remainder of 61.
The next digit of our result is 7. 
Result so far: 3953.4597
If we subtract 609 from 670, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 11:
87 can be fit into 610 7 times, resulting in a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 3953.45977
Subtracting 609 from 610 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 3953.45977 with a remainder of 1e-06.