Let's divide 1663638 by 858
We want to figure out the number of times 1663638 can be divided by 858.

Moving on to step 1:
858 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 858

On to step 2:
The number 858 fits into 16 0 times, leaving a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Fetch the next digit (6) from the dividend, attach it to 16 and continue: 166 / 858

On to step 3:
166 divided by 858 is 0 with a remainder of 166.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 166, we end up with 166.
Bring next digit (3) of the dividend behind the 166 and repeat the process: 1663 / 858

Moving on to step 4:
When dividing 1663 by 858, we get 1 with a remainder of 805.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 858 from 1663 and we're left with 805.
Take the next digit (6) from the dividend and append it to 805, then repeat: 8056 / 858

Going ahead to step 5:
When dividing 8056 by 858, we get 9 with a remainder of 334.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtracting 7722 from 8056 leaves us with 334.
Fetch the next digit (3) from the dividend, attach it to 334 and continue: 3343 / 858

On to step 6:
The number 858 fits into 3343 3 times, leaving a remainder of 769.
Use 3 as the next digit of our solution. 
Result so far: 193.0
If we take 2574 away from 3343, we end up with 769.
Grab the next digit (8) from the dividend, add it to 769, then carry on: 7698 / 858

Step 7:
When dividing 7698 by 858, we get 8 with a remainder of 834.
Put 8 as the next digit of the answer. 
Result so far: 1938.0
Subtract 6864 from 7698 to get 834.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8340, and continue the process.

Let's proceed to step 8:
When dividing 8340 by 858, we get 9 with a remainder of 618.
Write down 9 as next digit of the result. 
Result so far: 1938.9
If we take 7722 away from 8340, we end up with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Let's proceed to step 9:
858 goes into 6180 7 times with a remainder of 174.
The number 7 becomes the next digit in our result. 
Result so far: 1938.97
The remainder is 174 after subtracting 6006 from 6180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Going ahead to step 10:
The number 858 fits into 1740 2 times, leaving a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 1938.972
If we subtract 1716 from 1740, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
240 divided by 858 is 0 with a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 1938.972
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
When dividing 2400 by 858, we get 2 with a remainder of 684.
The number 2 becomes the next digit in our result. 
Result so far: 1938.97202
Subtract 1716 from 2400 to get 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Moving on to step 13:
6840 divided by 858 is 7 with a remainder of 834.
Write down 7 as next digit of the result. 
Result so far: 1938.972027
Subtract 6006 from 6840 to get 834.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8340, and continue the process.

On to step 14:
When dividing 8340 by 858, we get 9 with a remainder of 618.
The next digit of our result is 9. 
Result so far: 1938.9720279
Deduct 7722 from 8340 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Let's proceed to step 15:
6180 divided by 858 is 7 with a remainder of 174.
Use 7 as the next digit of our solution. 
Result so far: 1938.97202797
Subtracting 6006 from 6180 leaves us with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Our division results in 1938.97202797 with a remaining 1.74e-07.