86344303 ÷ 424 
Let's see how many times 424 fits into 86344303.

On to step 1:
The number 424 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 424

Moving on to step 2:
The number 424 fits into 86 0 times, leaving a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Grab the next digit (3) from the dividend, add it to 86, then carry on: 863 / 424

On to step 3:
424 goes into 863 2 times with a remainder of 15.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 848 from 863, we get 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 424

Moving on to step 4:
If we divide 154 by 424, we get 0 and a remainder of 154.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Subtracting 0 from 154 leaves us with 154.
Fetch the next digit (4) from the dividend, attach it to 154 and continue: 1544 / 424

Step 5:
When dividing 1544 by 424, we get 3 with a remainder of 272.
The number 3 becomes the next digit in our result. 
Result so far: 203.0
If we take 1272 away from 1544, we end up with 272.
Grab the next digit (3) from the dividend, add it to 272, then carry on: 2723 / 424

Let's proceed to step 6:
The number 424 fits into 2723 6 times, leaving a remainder of 179.
Put 6 as the next digit of the answer. 
Result so far: 2036.0
Deduct 2544 from 2723 and we're left with 179.
Grab the next digit (0) from the dividend, add it to 179, then carry on: 1790 / 424

Advancing to step 7:
The number 424 fits into 1790 4 times, leaving a remainder of 94.
Put 4 as the next digit of the answer. 
Result so far: 20364.0
Deduct 1696 from 1790 and we're left with 94.
Include the next digit (3) from the dividend after 94, then repeat: 943 / 424

Let's proceed to step 8:
If we divide 943 by 424, we get 2 and a remainder of 95.
Put 2 as the next digit of the answer. 
Result so far: 203642.0
Subtract 848 from 943 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Step 9:
424 can be fit into 950 2 times, resulting in a remainder of 102.
Record the quotient 2 as the next digit in the result. 
Result so far: 203642.2
If we subtract 848 from 950, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

On to step 10:
If we divide 1020 by 424, we get 2 and a remainder of 172.
Record the quotient 2 as the next digit in the result. 
Result so far: 203642.22
Subtract 848 from 1020 to get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

After the division, we end up with 203642.22 and a remainder of 0.172.