We look at the division of 64442186 by 646 
Our goal is to divide 64442186 by 646.

Advancing to step 1:
6 divided by 646 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 646

Let's proceed to step 2:
If we divide 64 by 646, we get 0 and a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 646

Step 3:
646 goes into 644 0 times with a remainder of 644.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 644 after subtracting 0 from 644.
Grab the next digit (4) from the dividend, add it to 644, then carry on: 6444 / 646

Moving on to step 4:
The number 646 fits into 6444 9 times, leaving a remainder of 630.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 5814 away from 6444, we end up with 630.
Bring next digit (2) of the dividend behind the 630 and repeat the process: 6302 / 646

Step 5:
When dividing 6302 by 646, we get 9 with a remainder of 488.
Write down 9 as next digit of the result. 
Result so far: 99.0
Subtracting 5814 from 6302 leaves us with 488.
Fetch the next digit (1) from the dividend, attach it to 488 and continue: 4881 / 646

Step 6:
4881 divided by 646 is 7 with a remainder of 359.
Write down 7 as next digit of the result. 
Result so far: 997.0
If we subtract 4522 from 4881, we get 359.
Append the next digit (8) from the dividend to 359 and continue with: 3598 / 646

Step 7:
When dividing 3598 by 646, we get 5 with a remainder of 368.
The number 5 becomes the next digit in our result. 
Result so far: 9975.0
Deduct 3230 from 3598 and we're left with 368.
Bring next digit (6) of the dividend behind the 368 and repeat the process: 3686 / 646

On to step 8:
If we divide 3686 by 646, we get 5 and a remainder of 456.
Put 5 as the next digit of the answer. 
Result so far: 99755.0
Subtract 3230 from 3686 to get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 9:
4560 divided by 646 is 7 with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 99755.7
The remainder is 38 after subtracting 4522 from 4560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 10:
646 goes into 380 0 times with a remainder of 380.
Write down 0 as next digit of the result. 
Result so far: 99755.7
Subtract 0 from 380 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 11:
When dividing 3800 by 646, we get 5 with a remainder of 570.
Record the quotient 5 as the next digit in the result. 
Result so far: 99755.705
If we take 3230 away from 3800, we end up with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 12:
646 goes into 5700 8 times with a remainder of 532.
Record the quotient 8 as the next digit in the result. 
Result so far: 99755.7058
Subtract 5168 from 5700 to get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Going ahead to step 13:
646 can be fit into 5320 8 times, resulting in a remainder of 152.
Use 8 as the next digit of our solution. 
Result so far: 99755.70588
Subtract 5168 from 5320 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

The quotient of the division is 99755.70588, and the remainder is 0.000152.