Let's divide 14423090 by 870
Let's see how many times 870 fits into 14423090.

Going ahead to step 1:
When dividing 1 by 870, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 870

On to step 2:
14 divided by 870 is 0 with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Include the next digit (4) from the dividend after 14, then repeat: 144 / 870

Advancing to step 3:
If we divide 144 by 870, we get 0 and a remainder of 144.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 144, we get 144.
Append the next digit (2) from the dividend to 144 and continue with: 1442 / 870

Step 4:
870 can be fit into 1442 1 times, resulting in a remainder of 572.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 870 from 1442 and we're left with 572.
Append the next digit (3) from the dividend to 572 and continue with: 5723 / 870

Moving on to step 5:
When dividing 5723 by 870, we get 6 with a remainder of 503.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we subtract 5220 from 5723, we get 503.
Take the next digit (0) from the dividend and append it to 503, then repeat: 5030 / 870

Moving on to step 6:
870 goes into 5030 5 times with a remainder of 680.
The next digit of our result is 5. 
Result so far: 165.0
If we take 4350 away from 5030, we end up with 680.
Fetch the next digit (9) from the dividend, attach it to 680 and continue: 6809 / 870

On to step 7:
870 can be fit into 6809 7 times, resulting in a remainder of 719.
Put 7 as the next digit of the answer. 
Result so far: 1657.0
If we subtract 6090 from 6809, we get 719.
Include the next digit (0) from the dividend after 719, then repeat: 7190 / 870

Moving on to step 8:
870 can be fit into 7190 8 times, resulting in a remainder of 230.
Record the quotient 8 as the next digit in the result. 
Result so far: 16578.0
Subtracting 6960 from 7190 leaves us 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.

On to step 9:
870 can be fit into 2300 2 times, resulting in a remainder of 560.
The next digit of our result is 2. 
Result so far: 16578.2
If we take 1740 away from 2300, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 10:
When dividing 5600 by 870, we get 6 with a remainder of 380.
The number 6 becomes the next digit in our result. 
Result so far: 16578.26
If we take 5220 away from 5600, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 11:
3800 divided by 870 is 4 with a remainder of 320.
The number 4 becomes the next digit in our result. 
Result so far: 16578.264
Deduct 3480 from 3800 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 12:
The number 870 fits into 3200 3 times, leaving a remainder of 590.
Put 3 as the next digit of the answer. 
Result so far: 16578.2643
If we take 2610 away from 3200, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Let's proceed to step 13:
870 goes into 5900 6 times with a remainder of 680.
Put 6 as the next digit of the answer. 
Result so far: 16578.26436
If we take 5220 away from 5900, we end up with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Going ahead to step 14:
If we divide 6800 by 870, we get 7 and a remainder of 710.
Record the quotient 7 as the next digit in the result. 
Result so far: 16578.264367
If we subtract 6090 from 6800, we get 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Moving on to step 15:
7100 divided by 870 is 8 with a remainder of 140.
The next digit of our result is 8. 
Result so far: 16578.2643678
Subtracting 6960 from 7100 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 16:
1400 divided by 870 is 1 with a remainder of 530.
Write down 1 as next digit of the result. 
Result so far: 16578.26436781
Subtracting 870 from 1400 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

The final result is 16578.26436781 with a remainder of 5.3e-07.