843870 ÷ 4 
We're looking to find how many times 4 goes into 843870.

Advancing to step 1:
4 can be fit into 8 2 times, resulting in a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 8 from 8 and we're left with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 4

On to step 2:
The number 4 fits into 4 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 21.0
Deduct 4 from 4 and we're left with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 4

Step 3:
The number 4 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 210.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 4

Going ahead to step 4:
When dividing 38 by 4, we get 9 with a remainder of 2.
The next digit of our result is 9. 
Result so far: 2109.0
If we subtract 36 from 38, we get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 4

Going ahead to step 5:
When dividing 27 by 4, we get 6 with a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 21096.0
Deduct 24 from 27 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 4

Moving on to step 6:
4 goes into 30 7 times with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 210967.0
Subtracting 28 from 30 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
4 can be fit into 20 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 210967.5
If we subtract 20 from 20, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
When dividing 0 by 4, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 210967.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 210967.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 210967.5 with a remaining 0.0.