We divide 1663451 by 520
Let's see how many times 520 fits into 1663451.

On to step 1:
If we divide 1 by 520, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 520

Let's proceed to step 2:
The number 520 fits into 16 0 times, leaving a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Fetch the next digit (6) from the dividend, attach it to 16 and continue: 166 / 520

On to step 3:
The number 520 fits into 166 0 times, leaving a remainder of 166.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 166, we get 166.
Append the next digit (3) from the dividend to 166 and continue with: 1663 / 520

Step 4:
520 can be fit into 1663 3 times, resulting in a remainder of 103.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 1560 away from 1663, we end up with 103.
Grab the next digit (4) from the dividend, add it to 103, then carry on: 1034 / 520

Step 5:
If we divide 1034 by 520, we get 1 and a remainder of 514.
The next digit of our result is 1. 
Result so far: 31.0
If we take 520 away from 1034, we end up with 514.
Fetch the next digit (5) from the dividend, attach it to 514 and continue: 5145 / 520

Step 6:
520 goes into 5145 9 times with a remainder of 465.
Record the quotient 9 as the next digit in the result. 
Result so far: 319.0
If we take 4680 away from 5145, we end up with 465.
Append the next digit (1) from the dividend to 465 and continue with: 4651 / 520

Advancing to step 7:
If we divide 4651 by 520, we get 8 and a remainder of 491.
The number 8 becomes the next digit in our result. 
Result so far: 3198.0
Subtract 4160 from 4651 to get 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Step 8:
When dividing 4910 by 520, we get 9 with a remainder of 230.
Write down 9 as next digit of the result. 
Result so far: 3198.9
If we take 4680 away from 4910, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 9:
2300 divided by 520 is 4 with a remainder of 220.
Record the quotient 4 as the next digit in the result. 
Result so far: 3198.94
Deduct 2080 from 2300 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 10:
When dividing 2200 by 520, we get 4 with a remainder of 120.
The next digit of our result is 4. 
Result so far: 3198.944
If we take 2080 away from 2200, we end up 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.

In conclusion, the division gives 3198.944 with a balance of 0.012.