43377851 divided by 666 
Our goal is to divide 43377851 by 666.

Step 1:
666 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 666

Step 2:
When dividing 43 by 666, we get 0 with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Include the next digit (3) from the dividend after 43, then repeat: 433 / 666

Let's proceed to step 3:
666 can be fit into 433 0 times, resulting in a remainder of 433.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 433 to get 433.
Take the next digit (7) from the dividend and append it to 433, then repeat: 4337 / 666

Advancing to step 4:
If we divide 4337 by 666, we get 6 and a remainder of 341.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 3996 from 4337 and we're left with 341.
Fetch the next digit (7) from the dividend, attach it to 341 and continue: 3417 / 666

Let's proceed to step 5:
3417 divided by 666 is 5 with a remainder of 87.
The next digit of our result is 5. 
Result so far: 65.0
If we take 3330 away from 3417, we end up with 87.
Fetch the next digit (8) from the dividend, attach it to 87 and continue: 878 / 666

Step 6:
When dividing 878 by 666, we get 1 with a remainder of 212.
Record the quotient 1 as the next digit in the result. 
Result so far: 651.0
Subtract 666 from 878 to get 212.
Bring next digit (5) of the dividend behind the 212 and repeat the process: 2125 / 666

On to step 7:
When dividing 2125 by 666, we get 3 with a remainder of 127.
Record the quotient 3 as the next digit in the result. 
Result so far: 6513.0
The remainder is 127 after subtracting 1998 from 2125.
Include the next digit (1) from the dividend after 127, then repeat: 1271 / 666

Moving on to step 8:
When dividing 1271 by 666, we get 1 with a remainder of 605.
The number 1 becomes the next digit in our result. 
Result so far: 65131.0
If we subtract 666 from 1271, we get 605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Going ahead to step 9:
6050 divided by 666 is 9 with a remainder of 56.
Put 9 as the next digit of the answer. 
Result so far: 65131.9
Deduct 5994 from 6050 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 10:
560 divided by 666 is 0 with a remainder of 560.
Record the quotient 0 as the next digit in the result. 
Result so far: 65131.9
If we subtract 0 from 560, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 11:
5600 divided by 666 is 8 with a remainder of 272.
The next digit of our result is 8. 
Result so far: 65131.908
If we subtract 5328 from 5600, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Let's proceed to step 12:
The number 666 fits into 2720 4 times, leaving a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 65131.9084
Deduct 2664 from 2720 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 13:
560 divided by 666 is 0 with a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 65131.9084
The remainder is 560 after subtracting 0 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Moving on to step 14:
The number 666 fits into 5600 8 times, leaving a remainder of 272.
Put 8 as the next digit of the answer. 
Result so far: 65131.908408
The remainder is 272 after subtracting 5328 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

On to step 15:
2720 divided by 666 is 4 with a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 65131.9084084
Deduct 2664 from 2720 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 16:
666 can be fit into 560 0 times, resulting in a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 65131.9084084
Subtract 0 from 560 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

The final outcome is 65131.9084084, with a leftover of 5.6e-07.