Let's divide 16889454 by 870
We want to divide 16889454 by 870.

Let's proceed to step 1:
If we divide 1 by 870, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 870

Advancing to step 2:
If we divide 16 by 870, we get 0 and a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Include the next digit (8) from the dividend after 16, then repeat: 168 / 870

Let's proceed to step 3:
870 can be fit into 168 0 times, resulting in a remainder of 168.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 168 to get 168.
Take the next digit (8) from the dividend and append it to 168, then repeat: 1688 / 870

On to step 4:
870 can be fit into 1688 1 times, resulting in a remainder of 818.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 870 from 1688, we get 818.
Bring next digit (9) of the dividend behind the 818 and repeat the process: 8189 / 870

Advancing to step 5:
870 goes into 8189 9 times with a remainder of 359.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 7830 from 8189 leaves us with 359.
Take the next digit (4) from the dividend and append it to 359, then repeat: 3594 / 870

Let's proceed to step 6:
870 goes into 3594 4 times with a remainder of 114.
Record the quotient 4 as the next digit in the result. 
Result so far: 194.0
Subtracting 3480 from 3594 leaves us with 114.
Take the next digit (5) from the dividend and append it to 114, then repeat: 1145 / 870

On to step 7:
870 can be fit into 1145 1 times, resulting in a remainder of 275.
Use 1 as the next digit of our solution. 
Result so far: 1941.0
Subtract 870 from 1145 to get 275.
Grab the next digit (4) from the dividend, add it to 275, then carry on: 2754 / 870

Going ahead to step 8:
2754 divided by 870 is 3 with a remainder of 144.
The number 3 becomes the next digit in our result. 
Result so far: 19413.0
If we subtract 2610 from 2754, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 9:
When dividing 1440 by 870, we get 1 with a remainder of 570.
Record the quotient 1 as the next digit in the result. 
Result so far: 19413.1
Subtracting 870 from 1440 leaves us with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

On to step 10:
5700 divided by 870 is 6 with a remainder of 480.
Use 6 as the next digit of our solution. 
Result so far: 19413.16
The remainder is 480 after subtracting 5220 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 11:
When dividing 4800 by 870, we get 5 with a remainder of 450.
Put 5 as the next digit of the answer. 
Result so far: 19413.165
Deduct 4350 from 4800 and we're left with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Let's proceed to step 12:
870 can be fit into 4500 5 times, resulting in a remainder of 150.
Use 5 as the next digit of our solution. 
Result so far: 19413.1655
If we take 4350 away from 4500, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

The final outcome is 19413.1655, with a leftover of 0.0015.