We divide 42478609 by 853
Our goal is to divide 42478609 by 853.

On to step 1:
The number 853 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 853

Let's proceed to step 2:
42 divided by 853 is 0 with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (4) from the dividend, attach it to 42 and continue: 424 / 853

Step 3:
The number 853 fits into 424 0 times, leaving a remainder of 424.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 424 leaves us with 424.
Grab the next digit (7) from the dividend, add it to 424, then carry on: 4247 / 853

Going ahead to step 4:
If we divide 4247 by 853, we get 4 and a remainder of 835.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 3412 from 4247, we get 835.
Include the next digit (8) from the dividend after 835, then repeat: 8358 / 853

Going ahead to step 5:
8358 divided by 853 is 9 with a remainder of 681.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
If we take 7677 away from 8358, we end up with 681.
Append the next digit (6) from the dividend to 681 and continue with: 6816 / 853

Step 6:
853 can be fit into 6816 7 times, resulting in a remainder of 845.
The next digit of our result is 7. 
Result so far: 497.0
Deduct 5971 from 6816 and we're left with 845.
Append the next digit (0) from the dividend to 845 and continue with: 8450 / 853

Moving on to step 7:
853 goes into 8450 9 times with a remainder of 773.
The next digit of our result is 9. 
Result so far: 4979.0
If we subtract 7677 from 8450, we get 773.
Append the next digit (9) from the dividend to 773 and continue with: 7739 / 853

Moving on to step 8:
The number 853 fits into 7739 9 times, leaving a remainder of 62.
Put 9 as the next digit of the answer. 
Result so far: 49799.0
If we subtract 7677 from 7739, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 9:
853 goes into 620 0 times with a remainder of 620.
The next digit of our result is 0. 
Result so far: 49799.0
Subtract 0 from 620 to get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Step 10:
When dividing 6200 by 853, we get 7 with a remainder of 229.
The next digit of our result is 7. 
Result so far: 49799.07
Deduct 5971 from 6200 and we're left with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Let's proceed to step 11:
853 can be fit into 2290 2 times, resulting in a remainder of 584.
The number 2 becomes the next digit in our result. 
Result so far: 49799.072
The remainder is 584 after subtracting 1706 from 2290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

On to step 12:
853 can be fit into 5840 6 times, resulting in a remainder of 722.
Use 6 as the next digit of our solution. 
Result so far: 49799.0726
If we take 5118 away from 5840, we end up with 722.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7220, and continue the process.

Step 13:
When dividing 7220 by 853, we get 8 with a remainder of 396.
Write down 8 as next digit of the result. 
Result so far: 49799.07268
If we subtract 6824 from 7220, we get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Step 14:
853 goes into 3960 4 times with a remainder of 548.
Use 4 as the next digit of our solution. 
Result so far: 49799.072684
The remainder is 548 after subtracting 3412 from 3960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

On to step 15:
If we divide 5480 by 853, we get 6 and a remainder of 362.
Write down 6 as next digit of the result. 
Result so far: 49799.0726846
Subtract 5118 from 5480 to get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 16:
The number 853 fits into 3620 4 times, leaving a remainder of 208.
The number 4 becomes the next digit in our result. 
Result so far: 49799.07268464
Deduct 3412 from 3620 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

After the division, we end up with 49799.07268464 and a remainder of 2.08e-07.