We're dividing 87420531 by 394 
Let's see how many times 394 fits into 87420531.

Step 1:
When dividing 8 by 394, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 394

Going ahead to step 2:
394 goes into 87 0 times with a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Fetch the next digit (4) from the dividend, attach it to 87 and continue: 874 / 394

On to step 3:
When dividing 874 by 394, we get 2 with a remainder of 86.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 788 from 874 to get 86.
Append the next digit (2) from the dividend to 86 and continue with: 862 / 394

Step 4:
When dividing 862 by 394, we get 2 with a remainder of 74.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we subtract 788 from 862, we get 74.
Append the next digit (0) from the dividend to 74 and continue with: 740 / 394

Moving on to step 5:
394 can be fit into 740 1 times, resulting in a remainder of 346.
Use 1 as the next digit of our solution. 
Result so far: 221.0
If we subtract 394 from 740, we get 346.
Append the next digit (5) from the dividend to 346 and continue with: 3465 / 394

Moving on to step 6:
The number 394 fits into 3465 8 times, leaving a remainder of 313.
Record the quotient 8 as the next digit in the result. 
Result so far: 2218.0
If we subtract 3152 from 3465, we get 313.
Take the next digit (3) from the dividend and append it to 313, then repeat: 3133 / 394

Going ahead to step 7:
3133 divided by 394 is 7 with a remainder of 375.
The next digit of our result is 7. 
Result so far: 22187.0
Subtracting 2758 from 3133 leaves us with 375.
Take the next digit (1) from the dividend and append it to 375, then repeat: 3751 / 394

Going ahead to step 8:
The number 394 fits into 3751 9 times, leaving a remainder of 205.
Put 9 as the next digit of the answer. 
Result so far: 221879.0
The remainder is 205 after subtracting 3546 from 3751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Advancing to step 9:
2050 divided by 394 is 5 with a remainder of 80.
The next digit of our result is 5. 
Result so far: 221879.5
The remainder is 80 after subtracting 1970 from 2050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 10:
When dividing 800 by 394, we get 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 221879.52
If we take 788 away from 800, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
When dividing 120 by 394, we get 0 with a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 221879.52
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 12:
When dividing 1200 by 394, we get 3 with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 221879.5203
Deduct 1182 from 1200 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
180 divided by 394 is 0 with a remainder of 180.
Use 0 as the next digit of our solution. 
Result so far: 221879.5203
If we take 0 away from 180, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 14:
394 goes into 1800 4 times with a remainder of 224.
Use 4 as the next digit of our solution. 
Result so far: 221879.520304
If we take 1576 away from 1800, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 15:
394 goes into 2240 5 times with a remainder of 270.
Use 5 as the next digit of our solution. 
Result so far: 221879.5203045
If we take 1970 away from 2240, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 16:
If we divide 2700 by 394, we get 6 and a remainder of 336.
Put 6 as the next digit of the answer. 
Result so far: 221879.52030456
If we subtract 2364 from 2700, we get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

The final outcome is 221879.52030456, with a leftover of 3.36e-07.