350172 ÷ 86 
Let's see how many times 86 fits into 350172.

On to step 1:
The number 86 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 86

Going ahead to step 2:
When dividing 35 by 86, we get 0 with a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 86

Advancing to step 3:
If we divide 350 by 86, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 344 from 350 to get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 86

Step 4:
86 can be fit into 61 0 times, resulting in a remainder of 61.
Write down 0 as next digit of the result. 
Result so far: 40.0
If we take 0 away from 61, we end up with 61.
Fetch the next digit (7) from the dividend, attach it to 61 and continue: 617 / 86

Step 5:
86 can be fit into 617 7 times, resulting in a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 407.0
The remainder is 15 after subtracting 602 from 617.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 86

Let's proceed to step 6:
When dividing 152 by 86, we get 1 with a remainder of 66.
Use 1 as the next digit of our solution. 
Result so far: 4071.0
Subtract 86 from 152 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 7:
When dividing 660 by 86, we get 7 with a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 4071.7
Subtract 602 from 660 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 8:
When dividing 580 by 86, we get 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 4071.76
Subtract 516 from 580 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 9:
The number 86 fits into 640 7 times, leaving a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 4071.767
Subtracting 602 from 640 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 10:
380 divided by 86 is 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 4071.7674
Subtract 344 from 380 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 11:
86 goes into 360 4 times with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 4071.76744
The remainder is 16 after subtracting 344 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 4071.76744 and a remainder of 1.6e-05.