12418378 ÷ 426 
We're looking to find how many times 426 goes into 12418378.

Advancing to step 1:
If we divide 1 by 426, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 426

Going ahead to step 2:
426 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 426

Let's proceed to step 3:
426 goes into 124 0 times with a remainder of 124.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 124 leaves us with 124.
Append the next digit (1) from the dividend to 124 and continue with: 1241 / 426

Step 4:
If we divide 1241 by 426, we get 2 and a remainder of 389.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 852 from 1241, we get 389.
Append the next digit (8) from the dividend to 389 and continue with: 3898 / 426

Let's proceed to step 5:
When dividing 3898 by 426, we get 9 with a remainder of 64.
Put 9 as the next digit of the answer. 
Result so far: 29.0
The remainder is 64 after subtracting 3834 from 3898.
Grab the next digit (3) from the dividend, add it to 64, then carry on: 643 / 426

Advancing to step 6:
426 can be fit into 643 1 times, resulting in a remainder of 217.
The next digit of our result is 1. 
Result so far: 291.0
Subtracting 426 from 643 leaves us with 217.
Take the next digit (7) from the dividend and append it to 217, then repeat: 2177 / 426

Advancing to step 7:
The number 426 fits into 2177 5 times, leaving a remainder of 47.
Use 5 as the next digit of our solution. 
Result so far: 2915.0
If we subtract 2130 from 2177, we get 47.
Include the next digit (8) from the dividend after 47, then repeat: 478 / 426

Going ahead to step 8:
When dividing 478 by 426, we get 1 with a remainder of 52.
The number 1 becomes the next digit in our result. 
Result so far: 29151.0
If we subtract 426 from 478, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 9:
When dividing 520 by 426, we get 1 with a remainder of 94.
Use 1 as the next digit of our solution. 
Result so far: 29151.1
If we take 426 away from 520, we end up with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Let's proceed to step 10:
426 can be fit into 940 2 times, resulting in a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 29151.12
If we subtract 852 from 940, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 11:
The number 426 fits into 880 2 times, leaving a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 29151.122
Subtract 852 from 880 to 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.

After the division, we end up with 29151.122 and a remainder of 0.0028.