66431386 ÷ 906 
We want to divide 66431386 by 906.

Step 1:
The number 906 fits into 6 0 times, leaving 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.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 906

Moving on to step 2:
When dividing 66 by 906, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Fetch the next digit (4) from the dividend, attach it to 66 and continue: 664 / 906

Moving on to step 3:
When dividing 664 by 906, we get 0 with a remainder of 664.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 664 after subtracting 0 from 664.
Fetch the next digit (3) from the dividend, attach it to 664 and continue: 6643 / 906

Going ahead to step 4:
6643 divided by 906 is 7 with a remainder of 301.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 6342 from 6643 leaves us with 301.
Grab the next digit (1) from the dividend, add it to 301, then carry on: 3011 / 906

Moving on to step 5:
906 can be fit into 3011 3 times, resulting in a remainder of 293.
Write down 3 as next digit of the result. 
Result so far: 73.0
If we take 2718 away from 3011, we end up with 293.
Include the next digit (3) from the dividend after 293, then repeat: 2933 / 906

Step 6:
906 goes into 2933 3 times with a remainder of 215.
The number 3 becomes the next digit in our result. 
Result so far: 733.0
If we take 2718 away from 2933, we end up with 215.
Grab the next digit (8) from the dividend, add it to 215, then carry on: 2158 / 906

On to step 7:
906 goes into 2158 2 times with a remainder of 346.
Record the quotient 2 as the next digit in the result. 
Result so far: 7332.0
The remainder is 346 after subtracting 1812 from 2158.
Include the next digit (6) from the dividend after 346, then repeat: 3466 / 906

On to step 8:
The number 906 fits into 3466 3 times, leaving a remainder of 748.
Use 3 as the next digit of our solution. 
Result so far: 73323.0
Subtracting 2718 from 3466 leaves us with 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Let's proceed to step 9:
When dividing 7480 by 906, we get 8 with a remainder of 232.
The number 8 becomes the next digit in our result. 
Result so far: 73323.8
The remainder is 232 after subtracting 7248 from 7480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Going ahead to step 10:
906 goes into 2320 2 times with a remainder of 508.
Put 2 as the next digit of the answer. 
Result so far: 73323.82
Subtract 1812 from 2320 to get 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Going ahead to step 11:
906 goes into 5080 5 times with a remainder of 550.
Use 5 as the next digit of our solution. 
Result so far: 73323.825
The remainder is 550 after subtracting 4530 from 5080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Going ahead to step 12:
906 can be fit into 5500 6 times, resulting in a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 73323.8256
The remainder is 64 after subtracting 5436 from 5500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 13:
906 can be fit into 640 0 times, resulting in a remainder of 640.
Write down 0 as next digit of the result. 
Result so far: 73323.8256
If we subtract 0 from 640, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 14:
906 can be fit into 6400 7 times, resulting in a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 73323.825607
The remainder is 58 after subtracting 6342 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 15:
580 divided by 906 is 0 with a remainder of 580.
The next digit of our result is 0. 
Result so far: 73323.825607
Deduct 0 from 580 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Advancing to step 16:
The number 906 fits into 5800 6 times, leaving a remainder of 364.
The next digit of our result is 6. 
Result so far: 73323.82560706
Subtract 5436 from 5800 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

The quotient of the division is 73323.82560706, and the remainder is 3.64e-07.