15058183 divided by 42 
We want to figure out the number of times 15058183 can be divided by 42.

On to step 1:
The number 42 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 42

On to step 2:
When dividing 15 by 42, we get 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (0) from the dividend after 15, then repeat: 150 / 42

On to step 3:
42 can be fit into 150 3 times, resulting in a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 126 from 150, we get 24.
Append the next digit (5) from the dividend to 24 and continue with: 245 / 42

Advancing to step 4:
If we divide 245 by 42, we get 5 and a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
Subtract 210 from 245 to get 35.
Take the next digit (8) from the dividend and append it to 35, then repeat: 358 / 42

Going ahead to step 5:
42 can be fit into 358 8 times, resulting in a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 358.0
If we take 336 away from 358, we end up with 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 42

Advancing to step 6:
When dividing 221 by 42, we get 5 with a remainder of 11.
The next digit of our result is 5. 
Result so far: 3585.0
Subtract 210 from 221 to get 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 42

On to step 7:
When dividing 118 by 42, we get 2 with a remainder of 34.
Put 2 as the next digit of the answer. 
Result so far: 35852.0
Deduct 84 from 118 and we're left with 34.
Grab the next digit (3) from the dividend, add it to 34, then carry on: 343 / 42

Moving on to step 8:
The number 42 fits into 343 8 times, leaving a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 358528.0
If we subtract 336 from 343, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
70 divided by 42 is 1 with a remainder of 28.
Use 1 as the next digit of our solution. 
Result so far: 358528.1
Subtracting 42 from 70 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 10:
If we divide 280 by 42, we get 6 and a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 358528.16
Deduct 252 from 280 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 11:
42 can be fit into 280 6 times, resulting in a remainder of 28.
The next digit of our result is 6. 
Result so far: 358528.166
If we subtract 252 from 280, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 358528.166 with a remainder of 0.0028.