Let's divide 13671690 by 438
We want to figure out the number of times 13671690 can be divided by 438.

Step 1:
438 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 438

Step 2:
If we divide 13 by 438, we get 0 and a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Append the next digit (6) from the dividend to 13 and continue with: 136 / 438

Going ahead to step 3:
The number 438 fits into 136 0 times, leaving a remainder of 136.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 136, we get 136.
Include the next digit (7) from the dividend after 136, then repeat: 1367 / 438

On to step 4:
The number 438 fits into 1367 3 times, leaving a remainder of 53.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 1314 away from 1367, we end up with 53.
Append the next digit (1) from the dividend to 53 and continue with: 531 / 438

Moving on to step 5:
438 goes into 531 1 times with a remainder of 93.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
Deduct 438 from 531 and we're left with 93.
Grab the next digit (6) from the dividend, add it to 93, then carry on: 936 / 438

On to step 6:
936 divided by 438 is 2 with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 312.0
Subtract 876 from 936 to get 60.
Fetch the next digit (9) from the dividend, attach it to 60 and continue: 609 / 438

Advancing to step 7:
The number 438 fits into 609 1 times, leaving a remainder of 171.
Use 1 as the next digit of our solution. 
Result so far: 3121.0
The remainder is 171 after subtracting 438 from 609.
Grab the next digit (0) from the dividend, add it to 171, then carry on: 1710 / 438

On to step 8:
438 can be fit into 1710 3 times, resulting in a remainder of 396.
Write down 3 as next digit of the result. 
Result so far: 31213.0
The remainder is 396 after subtracting 1314 from 1710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Moving on to step 9:
If we divide 3960 by 438, we get 9 and a remainder of 18.
The next digit of our result is 9. 
Result so far: 31213.9
Subtract 3942 from 3960 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 10:
The number 438 fits into 180 0 times, leaving a remainder of 180.
The next digit of our result is 0. 
Result so far: 31213.9
Subtracting 0 from 180 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 11:
If we divide 1800 by 438, we get 4 and a remainder of 48.
The next digit of our result is 4. 
Result so far: 31213.904
If we take 1752 away from 1800, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 12:
The number 438 fits into 480 1 times, leaving a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 31213.9041
Subtract 438 from 480 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 13:
438 goes into 420 0 times with a remainder of 420.
Use 0 as the next digit of our solution. 
Result so far: 31213.9041
If we take 0 away from 420, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 14:
438 can be fit into 4200 9 times, resulting in a remainder of 258.
The number 9 becomes the next digit in our result. 
Result so far: 31213.904109
Subtract 3942 from 4200 to get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Advancing to step 15:
438 goes into 2580 5 times with a remainder of 390.
The next digit of our result is 5. 
Result so far: 31213.9041095
Deduct 2190 from 2580 and we're left with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Going ahead to step 16:
438 can be fit into 3900 8 times, resulting in a remainder of 396.
Record the quotient 8 as the next digit in the result. 
Result so far: 31213.90410958
Deduct 3504 from 3900 and we're left with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

The quotient of the division is 31213.90410958, and the remainder is 3.96e-07.