43486904 ÷ 579 
Our goal is to divide 43486904 by 579.

Moving on to step 1:
When dividing 4 by 579, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 579

Going ahead to step 2:
If we divide 43 by 579, we get 0 and a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Append the next digit (4) from the dividend to 43 and continue with: 434 / 579

Step 3:
The number 579 fits into 434 0 times, leaving a remainder of 434.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 434 after subtracting 0 from 434.
Include the next digit (8) from the dividend after 434, then repeat: 4348 / 579

Going ahead to step 4:
4348 divided by 579 is 7 with a remainder of 295.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 4053 from 4348 and we're left with 295.
Include the next digit (6) from the dividend after 295, then repeat: 2956 / 579

Advancing to step 5:
When dividing 2956 by 579, we get 5 with a remainder of 61.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
Subtracting 2895 from 2956 leaves us with 61.
Take the next digit (9) from the dividend and append it to 61, then repeat: 619 / 579

Step 6:
When dividing 619 by 579, we get 1 with a remainder of 40.
The number 1 becomes the next digit in our result. 
Result so far: 751.0
The remainder is 40 after subtracting 579 from 619.
Take the next digit (0) from the dividend and append it to 40, then repeat: 400 / 579

Step 7:
400 divided by 579 is 0 with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 7510.0
If we take 0 away from 400, we end up with 400.
Include the next digit (4) from the dividend after 400, then repeat: 4004 / 579

Step 8:
If we divide 4004 by 579, we get 6 and a remainder of 530.
Put 6 as the next digit of the answer. 
Result so far: 75106.0
The remainder is 530 after subtracting 3474 from 4004.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Going ahead to step 9:
The number 579 fits into 5300 9 times, leaving a remainder of 89.
Put 9 as the next digit of the answer. 
Result so far: 75106.9
If we take 5211 away from 5300, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Advancing to step 10:
579 can be fit into 890 1 times, resulting in a remainder of 311.
The number 1 becomes the next digit in our result. 
Result so far: 75106.91
If we subtract 579 from 890, we get 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Going ahead to step 11:
3110 divided by 579 is 5 with a remainder of 215.
The number 5 becomes the next digit in our result. 
Result so far: 75106.915
Subtract 2895 from 3110 to get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

On to step 12:
When dividing 2150 by 579, we get 3 with a remainder of 413.
The number 3 becomes the next digit in our result. 
Result so far: 75106.9153
Subtracting 1737 from 2150 leaves us with 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Moving on to step 13:
The number 579 fits into 4130 7 times, leaving a remainder of 77.
The next digit of our result is 7. 
Result so far: 75106.91537
If we subtract 4053 from 4130, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 14:
When dividing 770 by 579, we get 1 with a remainder of 191.
Write down 1 as next digit of the result. 
Result so far: 75106.915371
Deduct 579 from 770 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Let's proceed to step 15:
1910 divided by 579 is 3 with a remainder of 173.
The number 3 becomes the next digit in our result. 
Result so far: 75106.9153713
Subtracting 1737 from 1910 leaves us with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

On to step 16:
The number 579 fits into 1730 2 times, leaving a remainder of 572.
Use 2 as the next digit of our solution. 
Result so far: 75106.91537132
If we subtract 1158 from 1730, we get 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

The final outcome is 75106.91537132, with a leftover of 5.72e-07.