We're dividing 8407820 by 456 
Let's see how many times 456 fits into 8407820.

On to step 1:
If we divide 8 by 456, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 456

Moving on to step 2:
When dividing 84 by 456, we get 0 with a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 84 after subtracting 0 from 84.
Fetch the next digit (0) from the dividend, attach it to 84 and continue: 840 / 456

Advancing to step 3:
When dividing 840 by 456, we get 1 with a remainder of 384.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 456 from 840, we get 384.
Include the next digit (7) from the dividend after 384, then repeat: 3847 / 456

Let's proceed to step 4:
456 can be fit into 3847 8 times, resulting in a remainder of 199.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtracting 3648 from 3847 leaves us with 199.
Bring next digit (8) of the dividend behind the 199 and repeat the process: 1998 / 456

On to step 5:
456 goes into 1998 4 times with a remainder of 174.
The next digit of our result is 4. 
Result so far: 184.0
Subtracting 1824 from 1998 leaves us with 174.
Grab the next digit (2) from the dividend, add it to 174, then carry on: 1742 / 456

Step 6:
The number 456 fits into 1742 3 times, leaving a remainder of 374.
Record the quotient 3 as the next digit in the result. 
Result so far: 1843.0
If we subtract 1368 from 1742, we get 374.
Include the next digit (0) from the dividend after 374, then repeat: 3740 / 456

Going ahead to step 7:
456 goes into 3740 8 times with a remainder of 92.
Record the quotient 8 as the next digit in the result. 
Result so far: 18438.0
Subtract 3648 from 3740 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 8:
If we divide 920 by 456, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 18438.2
Deduct 912 from 920 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
When dividing 80 by 456, we get 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 18438.2
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 10:
800 divided by 456 is 1 with a remainder of 344.
Record the quotient 1 as the next digit in the result. 
Result so far: 18438.201
The remainder is 344 after subtracting 456 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Going ahead to step 11:
When dividing 3440 by 456, we get 7 with a remainder of 248.
The next digit of our result is 7. 
Result so far: 18438.2017
If we take 3192 away from 3440, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 12:
2480 divided by 456 is 5 with a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 18438.20175
Deduct 2280 from 2480 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 13:
When dividing 2000 by 456, we get 4 with a remainder of 176.
The next digit of our result is 4. 
Result so far: 18438.201754
The remainder is 176 after subtracting 1824 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 14:
When dividing 1760 by 456, we get 3 with a remainder of 392.
The number 3 becomes the next digit in our result. 
Result so far: 18438.2017543
Deduct 1368 from 1760 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 15:
When dividing 3920 by 456, we get 8 with a remainder of 272.
Put 8 as the next digit of the answer. 
Result so far: 18438.20175438
Deduct 3648 from 3920 and we're left with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Our division results in 18438.20175438 with a remaining 2.72e-07.