45191738 ÷ 664 
Let's see how many times 664 fits into 45191738.

Moving on to step 1:
If we divide 4 by 664, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 664

Let's proceed to step 2:
664 goes into 45 0 times with a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Take the next digit (1) from the dividend and append it to 45, then repeat: 451 / 664

Step 3:
The number 664 fits into 451 0 times, leaving a remainder of 451.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 451 after subtracting 0 from 451.
Append the next digit (9) from the dividend to 451 and continue with: 4519 / 664

Let's proceed to step 4:
664 can be fit into 4519 6 times, resulting in a remainder of 535.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 3984 away from 4519, we end up with 535.
Take the next digit (1) from the dividend and append it to 535, then repeat: 5351 / 664

On to step 5:
When dividing 5351 by 664, we get 8 with a remainder of 39.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
The remainder is 39 after subtracting 5312 from 5351.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 664

Advancing to step 6:
The number 664 fits into 397 0 times, leaving a remainder of 397.
Use 0 as the next digit of our solution. 
Result so far: 680.0
Subtracting 0 from 397 leaves us with 397.
Include the next digit (3) from the dividend after 397, then repeat: 3973 / 664

On to step 7:
The number 664 fits into 3973 5 times, leaving a remainder of 653.
The next digit of our result is 5. 
Result so far: 6805.0
If we take 3320 away from 3973, we end up with 653.
Bring next digit (8) of the dividend behind the 653 and repeat the process: 6538 / 664

Moving on to step 8:
664 can be fit into 6538 9 times, resulting in a remainder of 562.
Use 9 as the next digit of our solution. 
Result so far: 68059.0
The remainder is 562 after subtracting 5976 from 6538.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Moving on to step 9:
664 goes into 5620 8 times with a remainder of 308.
Write down 8 as next digit of the result. 
Result so far: 68059.8
Subtracting 5312 from 5620 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 10:
When dividing 3080 by 664, we get 4 with a remainder of 424.
Record the quotient 4 as the next digit in the result. 
Result so far: 68059.84
The remainder is 424 after subtracting 2656 from 3080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Advancing to step 11:
If we divide 4240 by 664, we get 6 and a remainder of 256.
The next digit of our result is 6. 
Result so far: 68059.846
Subtracting 3984 from 4240 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Moving on to step 12:
664 can be fit into 2560 3 times, resulting in a remainder of 568.
Use 3 as the next digit of our solution. 
Result so far: 68059.8463
If we subtract 1992 from 2560, we get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Let's proceed to step 13:
The number 664 fits into 5680 8 times, leaving a remainder of 368.
The next digit of our result is 8. 
Result so far: 68059.84638
Deduct 5312 from 5680 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Moving on to step 14:
664 can be fit into 3680 5 times, resulting in a remainder of 360.
The next digit of our result is 5. 
Result so far: 68059.846385
Subtracting 3320 from 3680 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 15:
The number 664 fits into 3600 5 times, leaving a remainder of 280.
The next digit of our result is 5. 
Result so far: 68059.8463855
If we subtract 3320 from 3600, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

In conclusion, the division gives 68059.8463855 with a balance of 2.8e-06.