42986646 divided by 859 
We want to figure out the number of times 42986646 can be divided by 859.

Step 1:
The number 859 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 859

On to step 2:
42 divided by 859 is 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Bring next digit (9) of the dividend behind the 42 and repeat the process: 429 / 859

Let's proceed to step 3:
The number 859 fits into 429 0 times, leaving a remainder of 429.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 429, we get 429.
Bring next digit (8) of the dividend behind the 429 and repeat the process: 4298 / 859

Advancing to step 4:
4298 divided by 859 is 5 with a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtract 4295 from 4298 to get 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 859

Step 5:
If we divide 36 by 859, we get 0 and a remainder of 36.
Use 0 as the next digit of our solution. 
Result so far: 50.0
The remainder is 36 after subtracting 0 from 36.
Include the next digit (6) from the dividend after 36, then repeat: 366 / 859

Advancing to step 6:
859 can be fit into 366 0 times, resulting in a remainder of 366.
Put 0 as the next digit of the answer. 
Result so far: 500.0
If we take 0 away from 366, we end up with 366.
Bring next digit (4) of the dividend behind the 366 and repeat the process: 3664 / 859

Moving on to step 7:
859 can be fit into 3664 4 times, resulting in a remainder of 228.
Record the quotient 4 as the next digit in the result. 
Result so far: 5004.0
If we take 3436 away from 3664, we end up with 228.
Take the next digit (6) from the dividend and append it to 228, then repeat: 2286 / 859

Moving on to step 8:
859 goes into 2286 2 times with a remainder of 568.
Put 2 as the next digit of the answer. 
Result so far: 50042.0
Subtract 1718 from 2286 to get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

On to step 9:
859 goes into 5680 6 times with a remainder of 526.
Put 6 as the next digit of the answer. 
Result so far: 50042.6
Deduct 5154 from 5680 and we're left with 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Moving on to step 10:
If we divide 5260 by 859, we get 6 and a remainder of 106.
Put 6 as the next digit of the answer. 
Result so far: 50042.66
If we take 5154 away from 5260, we end up with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

In conclusion, the division gives 50042.66 with a balance of 0.106.