Let's divide 416520 by 336
Our goal is to divide 416520 by 336.

Step 1:
336 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 336

Moving on to step 2:
336 goes into 41 0 times with a remainder of 41.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 41, we get 41.
Include the next digit (6) from the dividend after 41, then repeat: 416 / 336

Advancing to step 3:
When dividing 416 by 336, we get 1 with a remainder of 80.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 336 from 416 to get 80.
Take the next digit (5) from the dividend and append it to 80, then repeat: 805 / 336

Going ahead to step 4:
805 divided by 336 is 2 with a remainder of 133.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 133 after subtracting 672 from 805.
Fetch the next digit (2) from the dividend, attach it to 133 and continue: 1332 / 336

Advancing to step 5:
336 can be fit into 1332 3 times, resulting in a remainder of 324.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
If we subtract 1008 from 1332, we get 324.
Take the next digit (0) from the dividend and append it to 324, then repeat: 3240 / 336

On to step 6:
The number 336 fits into 3240 9 times, leaving a remainder of 216.
Put 9 as the next digit of the answer. 
Result so far: 1239.0
Subtracting 3024 from 3240 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 7:
2160 divided by 336 is 6 with a remainder of 144.
Put 6 as the next digit of the answer. 
Result so far: 1239.6
Subtracting 2016 from 2160 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 8:
The number 336 fits into 1440 4 times, leaving a remainder of 96.
Record the quotient 4 as the next digit in the result. 
Result so far: 1239.64
Subtracting 1344 from 1440 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 9:
The number 336 fits into 960 2 times, leaving a remainder of 288.
The next digit of our result is 2. 
Result so far: 1239.642
Subtracting 672 from 960 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 10:
When dividing 2880 by 336, we get 8 with a remainder of 192.
Write down 8 as next digit of the result. 
Result so far: 1239.6428
The remainder is 192 after subtracting 2688 from 2880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Going ahead to step 11:
336 goes into 1920 5 times with a remainder of 240.
Use 5 as the next digit of our solution. 
Result so far: 1239.64285
If we take 1680 away from 1920, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 12:
2400 divided by 336 is 7 with a remainder of 48.
Write down 7 as next digit of the result. 
Result so far: 1239.642857
If we take 2352 away from 2400, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
When dividing 480 by 336, we get 1 with a remainder of 144.
The next digit of our result is 1. 
Result so far: 1239.6428571
If we subtract 336 from 480, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 14:
336 goes into 1440 4 times with a remainder of 96.
Record the quotient 4 as the next digit in the result. 
Result so far: 1239.64285714
Subtracting 1344 from 1440 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The final outcome is 1239.64285714, with a leftover of 9.6e-08.