43381521 ÷ 520 
We want to divide 43381521 by 520.

Going ahead to step 1:
4 divided by 520 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 520

Advancing to step 2:
520 goes into 43 0 times with a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Fetch the next digit (3) from the dividend, attach it to 43 and continue: 433 / 520

Step 3:
The number 520 fits into 433 0 times, leaving a remainder of 433.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 433 and we're left with 433.
Fetch the next digit (8) from the dividend, attach it to 433 and continue: 4338 / 520

Moving on to step 4:
If we divide 4338 by 520, we get 8 and a remainder of 178.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 178 after subtracting 4160 from 4338.
Fetch the next digit (1) from the dividend, attach it to 178 and continue: 1781 / 520

On to step 5:
The number 520 fits into 1781 3 times, leaving a remainder of 221.
Use 3 as the next digit of our solution. 
Result so far: 83.0
Deduct 1560 from 1781 and we're left with 221.
Fetch the next digit (5) from the dividend, attach it to 221 and continue: 2215 / 520

Let's proceed to step 6:
The number 520 fits into 2215 4 times, leaving a remainder of 135.
Write down 4 as next digit of the result. 
Result so far: 834.0
If we subtract 2080 from 2215, we get 135.
Take the next digit (2) from the dividend and append it to 135, then repeat: 1352 / 520

On to step 7:
When dividing 1352 by 520, we get 2 with a remainder of 312.
The next digit of our result is 2. 
Result so far: 8342.0
Subtract 1040 from 1352 to get 312.
Fetch the next digit (1) from the dividend, attach it to 312 and continue: 3121 / 520

Let's proceed to step 8:
520 goes into 3121 6 times with a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 83426.0
If we subtract 3120 from 3121, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
When dividing 10 by 520, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 83426.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
The number 520 fits into 100 0 times, leaving a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 83426.0
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The quotient of the division is 83426.0, and the remainder is 0.1.