Let's divide 42836438 by 645
We want to divide 42836438 by 645.

Moving on to step 1:
When dividing 4 by 645, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 645

Going ahead to step 2:
42 divided by 645 is 0 with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 645

Let's proceed to step 3:
645 goes into 428 0 times with a remainder of 428.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 428 after subtracting 0 from 428.
Append the next digit (3) from the dividend to 428 and continue with: 4283 / 645

Step 4:
The number 645 fits into 4283 6 times, leaving a remainder of 413.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 3870 from 4283 and we're left with 413.
Append the next digit (6) from the dividend to 413 and continue with: 4136 / 645

On to step 5:
645 goes into 4136 6 times with a remainder of 266.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
If we take 3870 away from 4136, we end up with 266.
Fetch the next digit (4) from the dividend, attach it to 266 and continue: 2664 / 645

Advancing to step 6:
When dividing 2664 by 645, we get 4 with a remainder of 84.
Record the quotient 4 as the next digit in the result. 
Result so far: 664.0
If we subtract 2580 from 2664, we get 84.
Take the next digit (3) from the dividend and append it to 84, then repeat: 843 / 645

Let's proceed to step 7:
If we divide 843 by 645, we get 1 and a remainder of 198.
The number 1 becomes the next digit in our result. 
Result so far: 6641.0
If we take 645 away from 843, we end up with 198.
Append the next digit (8) from the dividend to 198 and continue with: 1988 / 645

Going ahead to step 8:
If we divide 1988 by 645, we get 3 and a remainder of 53.
Record the quotient 3 as the next digit in the result. 
Result so far: 66413.0
Deduct 1935 from 1988 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 9:
645 can be fit into 530 0 times, resulting in a remainder of 530.
The number 0 becomes the next digit in our result. 
Result so far: 66413.0
Deduct 0 from 530 and we're left 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.

On to step 10:
5300 divided by 645 is 8 with a remainder of 140.
Use 8 as the next digit of our solution. 
Result so far: 66413.08
If we subtract 5160 from 5300, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 11:
1400 divided by 645 is 2 with a remainder of 110.
The next digit of our result is 2. 
Result so far: 66413.082
If we subtract 1290 from 1400, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 12:
1100 divided by 645 is 1 with a remainder of 455.
Record the quotient 1 as the next digit in the result. 
Result so far: 66413.0821
Subtract 645 from 1100 to get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Going ahead to step 13:
4550 divided by 645 is 7 with a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 66413.08217
The remainder is 35 after subtracting 4515 from 4550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 14:
When dividing 350 by 645, we get 0 with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 66413.08217
Subtract 0 from 350 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 15:
When dividing 3500 by 645, we get 5 with a remainder of 275.
The number 5 becomes the next digit in our result. 
Result so far: 66413.0821705
If we subtract 3225 from 3500, we get 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Let's proceed to step 16:
When dividing 2750 by 645, we get 4 with a remainder of 170.
The number 4 becomes the next digit in our result. 
Result so far: 66413.08217054
If we subtract 2580 from 2750, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Our division results in 66413.08217054 with a remaining 1.7e-07.