We're dividing 45441906 by 644 
We want to divide 45441906 by 644.

Advancing to step 1:
644 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 644

Advancing to step 2:
When dividing 45 by 644, we get 0 with a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Bring next digit (4) of the dividend behind the 45 and repeat the process: 454 / 644

Advancing to step 3:
The number 644 fits into 454 0 times, leaving a remainder of 454.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 454, we end up with 454.
Append the next digit (4) from the dividend to 454 and continue with: 4544 / 644

On to step 4:
644 goes into 4544 7 times with a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 36 after subtracting 4508 from 4544.
Include the next digit (1) from the dividend after 36, then repeat: 361 / 644

Advancing to step 5:
When dividing 361 by 644, we get 0 with a remainder of 361.
Put 0 as the next digit of the answer. 
Result so far: 70.0
If we subtract 0 from 361, we get 361.
Grab the next digit (9) from the dividend, add it to 361, then carry on: 3619 / 644

Advancing to step 6:
3619 divided by 644 is 5 with a remainder of 399.
Use 5 as the next digit of our solution. 
Result so far: 705.0
If we take 3220 away from 3619, we end up with 399.
Append the next digit (0) from the dividend to 399 and continue with: 3990 / 644

Step 7:
The number 644 fits into 3990 6 times, leaving a remainder of 126.
The next digit of our result is 6. 
Result so far: 7056.0
If we take 3864 away from 3990, we end up with 126.
Fetch the next digit (6) from the dividend, attach it to 126 and continue: 1266 / 644

Let's proceed to step 8:
1266 divided by 644 is 1 with a remainder of 622.
Record the quotient 1 as the next digit in the result. 
Result so far: 70561.0
If we subtract 644 from 1266, we get 622.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6220, and continue the process.

Going ahead to step 9:
The number 644 fits into 6220 9 times, leaving a remainder of 424.
Use 9 as the next digit of our solution. 
Result so far: 70561.9
If we subtract 5796 from 6220, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

On to step 10:
644 can be fit into 4240 6 times, resulting in a remainder of 376.
Use 6 as the next digit of our solution. 
Result so far: 70561.96
Subtract 3864 from 4240 to get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Step 11:
644 goes into 3760 5 times with a remainder of 540.
Write down 5 as next digit of the result. 
Result so far: 70561.965
Subtract 3220 from 3760 to get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 12:
5400 divided by 644 is 8 with a remainder of 248.
Record the quotient 8 as the next digit in the result. 
Result so far: 70561.9658
Deduct 5152 from 5400 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 13:
644 goes into 2480 3 times with a remainder of 548.
The number 3 becomes the next digit in our result. 
Result so far: 70561.96583
Deduct 1932 from 2480 and we're left with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Moving on to step 14:
If we divide 5480 by 644, we get 8 and a remainder of 328.
Put 8 as the next digit of the answer. 
Result so far: 70561.965838
If we subtract 5152 from 5480, we get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Let's proceed to step 15:
644 goes into 3280 5 times with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 70561.9658385
Subtract 3220 from 3280 to 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.

Going ahead to step 16:
The number 644 fits into 600 0 times, leaving a remainder of 600.
Use 0 as the next digit of our solution. 
Result so far: 70561.9658385
If we take 0 away from 600, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

After the division, we end up with 70561.9658385 and a remainder of 6e-07.