41090381 ÷ 646 
We're looking to find how many times 646 goes into 41090381.

Step 1:
646 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 646

Advancing to step 2:
When dividing 41 by 646, we get 0 with a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 41, we end up with 41.
Include the next digit (0) from the dividend after 41, then repeat: 410 / 646

On to step 3:
The number 646 fits into 410 0 times, leaving a remainder of 410.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 410, we get 410.
Include the next digit (9) from the dividend after 410, then repeat: 4109 / 646

Let's proceed to step 4:
646 can be fit into 4109 6 times, resulting in a remainder of 233.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 3876 from 4109 to get 233.
Include the next digit (0) from the dividend after 233, then repeat: 2330 / 646

On to step 5:
2330 divided by 646 is 3 with a remainder of 392.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
Deduct 1938 from 2330 and we're left with 392.
Take the next digit (3) from the dividend and append it to 392, then repeat: 3923 / 646

Going ahead to step 6:
646 goes into 3923 6 times with a remainder of 47.
Put 6 as the next digit of the answer. 
Result so far: 636.0
Subtract 3876 from 3923 to get 47.
Grab the next digit (8) from the dividend, add it to 47, then carry on: 478 / 646

Advancing to step 7:
The number 646 fits into 478 0 times, leaving a remainder of 478.
Put 0 as the next digit of the answer. 
Result so far: 6360.0
Subtracting 0 from 478 leaves us with 478.
Bring next digit (1) of the dividend behind the 478 and repeat the process: 4781 / 646

Advancing to step 8:
646 goes into 4781 7 times with a remainder of 259.
Record the quotient 7 as the next digit in the result. 
Result so far: 63607.0
Subtract 4522 from 4781 to get 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

On to step 9:
2590 divided by 646 is 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 63607.4
Deduct 2584 from 2590 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
646 can be fit into 60 0 times, resulting in a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 63607.4
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
When dividing 600 by 646, we get 0 with a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 63607.4
The remainder is 600 after subtracting 0 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

The final outcome is 63607.4, with a leftover of 0.06.