58557 ÷ 42 
We want to figure out the number of times 58557 can be divided by 42.

Moving on to step 1:
5 divided by 42 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 42

On to step 2:
42 goes into 58 1 times with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 42 from 58 leaves us with 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 42

On to step 3:
42 can be fit into 165 3 times, resulting in a remainder of 39.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we subtract 126 from 165, we get 39.
Include the next digit (5) from the dividend after 39, then repeat: 395 / 42

Step 4:
When dividing 395 by 42, we get 9 with a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 139.0
Subtracting 378 from 395 leaves us with 17.
Bring next digit (7) of the dividend behind the 17 and repeat the process: 177 / 42

Going ahead to step 5:
When dividing 177 by 42, we get 4 with a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 1394.0
Deduct 168 from 177 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 6:
When dividing 90 by 42, we get 2 with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 1394.2
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
If we divide 60 by 42, we get 1 and a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 1394.21
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
The number 42 fits into 180 4 times, leaving a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 1394.214
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
If we divide 120 by 42, we get 2 and a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 1394.2142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 10:
If we divide 360 by 42, we get 8 and a remainder of 24.
The next digit of our result is 8. 
Result so far: 1394.21428
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
42 can be fit into 240 5 times, resulting in a remainder of 30.
The next digit of our result is 5. 
Result so far: 1394.214285
Subtract 210 from 240 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
If we divide 300 by 42, we get 7 and a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 1394.2142857
If we subtract 294 from 300, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
42 can be fit into 60 1 times, resulting in a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1394.21428571
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 1394.21428571 with a remainder of 1.8e-08.