83604644 ÷ 438 
We're looking to find how many times 438 goes into 83604644.

On to step 1:
If we divide 8 by 438, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 438

Moving on to step 2:
438 goes into 83 0 times with a remainder of 83.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Include the next digit (6) from the dividend after 83, then repeat: 836 / 438

Moving on to step 3:
438 goes into 836 1 times with a remainder of 398.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 398 after subtracting 438 from 836.
Take the next digit (0) from the dividend and append it to 398, then repeat: 3980 / 438

Step 4:
438 can be fit into 3980 9 times, resulting in a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 3942 from 3980, we get 38.
Fetch the next digit (4) from the dividend, attach it to 38 and continue: 384 / 438

On to step 5:
438 can be fit into 384 0 times, resulting in a remainder of 384.
Record the quotient 0 as the next digit in the result. 
Result so far: 190.0
The remainder is 384 after subtracting 0 from 384.
Bring next digit (6) of the dividend behind the 384 and repeat the process: 3846 / 438

Let's proceed to step 6:
3846 divided by 438 is 8 with a remainder of 342.
The next digit of our result is 8. 
Result so far: 1908.0
The remainder is 342 after subtracting 3504 from 3846.
Bring next digit (4) of the dividend behind the 342 and repeat the process: 3424 / 438

Let's proceed to step 7:
The number 438 fits into 3424 7 times, leaving a remainder of 358.
Put 7 as the next digit of the answer. 
Result so far: 19087.0
If we take 3066 away from 3424, we end up with 358.
Take the next digit (4) from the dividend and append it to 358, then repeat: 3584 / 438

Step 8:
438 goes into 3584 8 times with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 190878.0
The remainder is 80 after subtracting 3504 from 3584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 9:
438 can be fit into 800 1 times, resulting in a remainder of 362.
Use 1 as the next digit of our solution. 
Result so far: 190878.1
Deduct 438 from 800 and we're left with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Moving on to step 10:
438 can be fit into 3620 8 times, resulting in a remainder of 116.
The next digit of our result is 8. 
Result so far: 190878.18
Deduct 3504 from 3620 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Advancing to step 11:
If we divide 1160 by 438, we get 2 and a remainder of 284.
Write down 2 as next digit of the result. 
Result so far: 190878.182
Subtract 876 from 1160 to get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Step 12:
When dividing 2840 by 438, we get 6 with a remainder of 212.
Put 6 as the next digit of the answer. 
Result so far: 190878.1826
The remainder is 212 after subtracting 2628 from 2840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 13:
2120 divided by 438 is 4 with a remainder of 368.
Write down 4 as next digit of the result. 
Result so far: 190878.18264
Subtract 1752 from 2120 to get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 14:
438 goes into 3680 8 times with a remainder of 176.
Put 8 as the next digit of the answer. 
Result so far: 190878.182648
If we subtract 3504 from 3680, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 15:
When dividing 1760 by 438, we get 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 190878.1826484
The remainder is 8 after subtracting 1752 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 16:
When dividing 80 by 438, we get 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 190878.1826484
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 190878.1826484, with a leftover of 8e-08.