12135145 ÷ 438 
We're looking to find how many times 438 goes into 12135145.

Advancing to step 1:
If we divide 1 by 438, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 438

Let's proceed to step 2:
The number 438 fits into 12 0 times, leaving a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 438

Let's proceed to step 3:
438 can be fit into 121 0 times, resulting in a remainder of 121.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 121, we get 121.
Include the next digit (3) from the dividend after 121, then repeat: 1213 / 438

Step 4:
The number 438 fits into 1213 2 times, leaving a remainder of 337.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 876 from 1213 to get 337.
Fetch the next digit (5) from the dividend, attach it to 337 and continue: 3375 / 438

Going ahead to step 5:
438 goes into 3375 7 times with a remainder of 309.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Deduct 3066 from 3375 and we're left with 309.
Bring next digit (1) of the dividend behind the 309 and repeat the process: 3091 / 438

Step 6:
When dividing 3091 by 438, we get 7 with a remainder of 25.
The next digit of our result is 7. 
Result so far: 277.0
If we take 3066 away from 3091, we end up with 25.
Grab the next digit (4) from the dividend, add it to 25, then carry on: 254 / 438

Going ahead to step 7:
If we divide 254 by 438, we get 0 and a remainder of 254.
Record the quotient 0 as the next digit in the result. 
Result so far: 2770.0
The remainder is 254 after subtracting 0 from 254.
Take the next digit (5) from the dividend and append it to 254, then repeat: 2545 / 438

Step 8:
438 can be fit into 2545 5 times, resulting in a remainder of 355.
Record the quotient 5 as the next digit in the result. 
Result so far: 27705.0
If we take 2190 away from 2545, we end up with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Advancing to step 9:
When dividing 3550 by 438, we get 8 with a remainder of 46.
The next digit of our result is 8. 
Result so far: 27705.8
Subtract 3504 from 3550 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 10:
The number 438 fits into 460 1 times, leaving a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 27705.81
If we take 438 away from 460, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 11:
438 goes into 220 0 times with a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 27705.81
Subtracting 0 from 220 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 12:
2200 divided by 438 is 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 27705.8105
Deduct 2190 from 2200 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
When dividing 100 by 438, we get 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 27705.8105
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 14:
438 goes into 1000 2 times with a remainder of 124.
The number 2 becomes the next digit in our result. 
Result so far: 27705.810502
If we take 876 away from 1000, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Step 15:
The number 438 fits into 1240 2 times, leaving a remainder of 364.
Use 2 as the next digit of our solution. 
Result so far: 27705.8105022
Subtract 876 from 1240 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

In conclusion, the division gives 27705.8105022 with a balance of 3.64e-06.