42603348 ÷ 850 
Let's see how many times 850 fits into 42603348.

On to step 1:
The number 850 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 850

On to step 2:
If we divide 42 by 850, we get 0 and a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Append the next digit (6) from the dividend to 42 and continue with: 426 / 850

Let's proceed to step 3:
426 divided by 850 is 0 with a remainder of 426.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 426 and we're left with 426.
Include the next digit (0) from the dividend after 426, then repeat: 4260 / 850

Let's proceed to step 4:
4260 divided by 850 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 4250 from 4260 and we're left with 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 850

Moving on to step 5:
When dividing 103 by 850, we get 0 with a remainder of 103.
Put 0 as the next digit of the answer. 
Result so far: 50.0
If we subtract 0 from 103, we get 103.
Bring next digit (3) of the dividend behind the 103 and repeat the process: 1033 / 850

On to step 6:
1033 divided by 850 is 1 with a remainder of 183.
Put 1 as the next digit of the answer. 
Result so far: 501.0
Subtracting 850 from 1033 leaves us with 183.
Bring next digit (4) of the dividend behind the 183 and repeat the process: 1834 / 850

Step 7:
When dividing 1834 by 850, we get 2 with a remainder of 134.
Record the quotient 2 as the next digit in the result. 
Result so far: 5012.0
Subtract 1700 from 1834 to get 134.
Fetch the next digit (8) from the dividend, attach it to 134 and continue: 1348 / 850

Moving on to step 8:
850 can be fit into 1348 1 times, resulting in a remainder of 498.
Record the quotient 1 as the next digit in the result. 
Result so far: 50121.0
If we take 850 away from 1348, we end up with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Advancing to step 9:
If we divide 4980 by 850, we get 5 and a remainder of 730.
The next digit of our result is 5. 
Result so far: 50121.5
Deduct 4250 from 4980 and we're left with 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

On to step 10:
850 goes into 7300 8 times with a remainder of 500.
The next digit of our result is 8. 
Result so far: 50121.58
If we subtract 6800 from 7300, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Advancing to step 11:
850 can be fit into 5000 5 times, resulting in a remainder of 750.
The number 5 becomes the next digit in our result. 
Result so far: 50121.585
Deduct 4250 from 5000 and we're left with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Moving on to step 12:
850 goes into 7500 8 times with a remainder of 700.
Write down 8 as next digit of the result. 
Result so far: 50121.5858
If we subtract 6800 from 7500, we get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Step 13:
The number 850 fits into 7000 8 times, leaving a remainder of 200.
The number 8 becomes the next digit in our result. 
Result so far: 50121.58588
If we take 6800 away from 7000, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final outcome is 50121.58588, with a leftover of 0.0002.