65408035 ÷ 398 
Our goal is to divide 65408035 by 398.

Step 1:
When dividing 6 by 398, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 398

Moving on to step 2:
The number 398 fits into 65 0 times, leaving a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 65, we end up with 65.
Bring next digit (4) of the dividend behind the 65 and repeat the process: 654 / 398

Going ahead to step 3:
The number 398 fits into 654 1 times, leaving a remainder of 256.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 256 after subtracting 398 from 654.
Fetch the next digit (0) from the dividend, attach it to 256 and continue: 2560 / 398

Step 4:
398 goes into 2560 6 times with a remainder of 172.
The next digit of our result is 6. 
Result so far: 16.0
If we take 2388 away from 2560, we end up with 172.
Bring next digit (8) of the dividend behind the 172 and repeat the process: 1728 / 398

On to step 5:
1728 divided by 398 is 4 with a remainder of 136.
Put 4 as the next digit of the answer. 
Result so far: 164.0
Deduct 1592 from 1728 and we're left with 136.
Append the next digit (0) from the dividend to 136 and continue with: 1360 / 398

Step 6:
If we divide 1360 by 398, we get 3 and a remainder of 166.
Put 3 as the next digit of the answer. 
Result so far: 1643.0
If we take 1194 away from 1360, we end up with 166.
Grab the next digit (3) from the dividend, add it to 166, then carry on: 1663 / 398

Let's proceed to step 7:
When dividing 1663 by 398, we get 4 with a remainder of 71.
Record the quotient 4 as the next digit in the result. 
Result so far: 16434.0
Subtracting 1592 from 1663 leaves us with 71.
Fetch the next digit (5) from the dividend, attach it to 71 and continue: 715 / 398

Moving on to step 8:
If we divide 715 by 398, we get 1 and a remainder of 317.
Put 1 as the next digit of the answer. 
Result so far: 164341.0
The remainder is 317 after subtracting 398 from 715.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Moving on to step 9:
If we divide 3170 by 398, we get 7 and a remainder of 384.
Record the quotient 7 as the next digit in the result. 
Result so far: 164341.7
If we subtract 2786 from 3170, we get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Step 10:
3840 divided by 398 is 9 with a remainder of 258.
Record the quotient 9 as the next digit in the result. 
Result so far: 164341.79
Subtracting 3582 from 3840 leaves us with 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 11:
When dividing 2580 by 398, we get 6 with a remainder of 192.
The next digit of our result is 6. 
Result so far: 164341.796
Deduct 2388 from 2580 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 12:
If we divide 1920 by 398, we get 4 and a remainder of 328.
The number 4 becomes the next digit in our result. 
Result so far: 164341.7964
If we take 1592 away from 1920, we end up with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Advancing to step 13:
3280 divided by 398 is 8 with a remainder of 96.
The next digit of our result is 8. 
Result so far: 164341.79648
Subtracting 3184 from 3280 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 14:
398 goes into 960 2 times with a remainder of 164.
Put 2 as the next digit of the answer. 
Result so far: 164341.796482
The remainder is 164 after subtracting 796 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Going ahead to step 15:
398 goes into 1640 4 times with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 164341.7964824
Subtracting 1592 from 1640 leaves us 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.

Step 16:
The number 398 fits into 480 1 times, leaving a remainder of 82.
Use 1 as the next digit of our solution. 
Result so far: 164341.79648241
Deduct 398 from 480 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

The final outcome is 164341.79648241, with a leftover of 8.2e-08.