We look at the division of 58451304 by 42 
Let's see how many times 42 fits into 58451304.

Going ahead to step 1:
The number 42 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 42

Moving on to step 2:
When dividing 58 by 42, we get 1 with a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 42 from 58 and we're left with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 42

Going ahead to step 3:
When dividing 164 by 42, we get 3 with a remainder of 38.
The next digit of our result is 3. 
Result so far: 13.0
Subtracting 126 from 164 leaves us with 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 42

Moving on to step 4:
When dividing 385 by 42, we get 9 with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
If we subtract 378 from 385, we get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 42

Moving on to step 5:
42 goes into 71 1 times with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1391.0
If we subtract 42 from 71, we get 29.
Fetch the next digit (3) from the dividend, attach it to 29 and continue: 293 / 42

Let's proceed to step 6:
293 divided by 42 is 6 with a remainder of 41.
Write down 6 as next digit of the result. 
Result so far: 13916.0
Subtracting 252 from 293 leaves us with 41.
Include the next digit (0) from the dividend after 41, then repeat: 410 / 42

On to step 7:
When dividing 410 by 42, we get 9 with a remainder of 32.
Write down 9 as next digit of the result. 
Result so far: 139169.0
If we subtract 378 from 410, we get 32.
Bring next digit (4) of the dividend behind the 32 and repeat the process: 324 / 42

Step 8:
42 goes into 324 7 times with a remainder of 30.
The number 7 becomes the next digit in our result. 
Result so far: 1391697.0
Deduct 294 from 324 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 9:
When dividing 300 by 42, we get 7 with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 1391697.7
If we take 294 away from 300, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
If we divide 60 by 42, we get 1 and a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1391697.71
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.

On to step 11:
When dividing 180 by 42, we get 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 1391697.714
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.

Going ahead to step 12:
When dividing 120 by 42, we get 2 with a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 1391697.7142
Deduct 84 from 120 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 13:
If we divide 360 by 42, we get 8 and a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 1391697.71428
If we take 336 away from 360, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 14:
42 goes into 240 5 times with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 1391697.714285
If we take 210 away from 240, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 15:
The number 42 fits into 300 7 times, leaving a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 1391697.7142857
Subtract 294 from 300 to 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.

On to step 16:
When dividing 60 by 42, we get 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1391697.71428571
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.

The final outcome is 1391697.71428571, with a leftover of 1.8e-08.