12286215 ÷ 542 
We want to divide 12286215 by 542.

Let's proceed to step 1:
1 divided by 542 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 542

Advancing to step 2:
542 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 542

Step 3:
If we divide 122 by 542, we get 0 and a remainder of 122.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 122 to get 122.
Append the next digit (8) from the dividend to 122 and continue with: 1228 / 542

Going ahead to step 4:
When dividing 1228 by 542, we get 2 with a remainder of 144.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 144 after subtracting 1084 from 1228.
Include the next digit (6) from the dividend after 144, then repeat: 1446 / 542

Going ahead to step 5:
If we divide 1446 by 542, we get 2 and a remainder of 362.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtract 1084 from 1446 to get 362.
Append the next digit (2) from the dividend to 362 and continue with: 3622 / 542

Advancing to step 6:
3622 divided by 542 is 6 with a remainder of 370.
The next digit of our result is 6. 
Result so far: 226.0
Deduct 3252 from 3622 and we're left with 370.
Take the next digit (1) from the dividend and append it to 370, then repeat: 3701 / 542

Let's proceed to step 7:
When dividing 3701 by 542, we get 6 with a remainder of 449.
Put 6 as the next digit of the answer. 
Result so far: 2266.0
If we take 3252 away from 3701, we end up with 449.
Take the next digit (5) from the dividend and append it to 449, then repeat: 4495 / 542

Going ahead to step 8:
542 goes into 4495 8 times with a remainder of 159.
The next digit of our result is 8. 
Result so far: 22668.0
The remainder is 159 after subtracting 4336 from 4495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Advancing to step 9:
If we divide 1590 by 542, we get 2 and a remainder of 506.
Use 2 as the next digit of our solution. 
Result so far: 22668.2
Deduct 1084 from 1590 and we're left with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Going ahead to step 10:
When dividing 5060 by 542, we get 9 with a remainder of 182.
Put 9 as the next digit of the answer. 
Result so far: 22668.29
Subtracting 4878 from 5060 leaves us with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

On to step 11:
542 goes into 1820 3 times with a remainder of 194.
The number 3 becomes the next digit in our result. 
Result so far: 22668.293
Subtracting 1626 from 1820 leaves us with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Advancing to step 12:
The number 542 fits into 1940 3 times, leaving a remainder of 314.
Use 3 as the next digit of our solution. 
Result so far: 22668.2933
If we take 1626 away from 1940, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

The final outcome is 22668.2933, with a leftover of 0.00314.