We look at the division of 66366918 by 406 
Let's see how many times 406 fits into 66366918.

Step 1:
When dividing 6 by 406, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 406

Advancing to step 2:
When dividing 66 by 406, we get 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 406

On to step 3:
If we divide 663 by 406, we get 1 and a remainder of 257.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 406 from 663, we get 257.
Fetch the next digit (6) from the dividend, attach it to 257 and continue: 2576 / 406

Moving on to step 4:
The number 406 fits into 2576 6 times, leaving a remainder of 140.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
The remainder is 140 after subtracting 2436 from 2576.
Bring next digit (6) of the dividend behind the 140 and repeat the process: 1406 / 406

Step 5:
The number 406 fits into 1406 3 times, leaving a remainder of 188.
Use 3 as the next digit of our solution. 
Result so far: 163.0
Deduct 1218 from 1406 and we're left with 188.
Append the next digit (9) from the dividend to 188 and continue with: 1889 / 406

Advancing to step 6:
1889 divided by 406 is 4 with a remainder of 265.
The number 4 becomes the next digit in our result. 
Result so far: 1634.0
The remainder is 265 after subtracting 1624 from 1889.
Take the next digit (1) from the dividend and append it to 265, then repeat: 2651 / 406

Let's proceed to step 7:
406 can be fit into 2651 6 times, resulting in a remainder of 215.
Write down 6 as next digit of the result. 
Result so far: 16346.0
The remainder is 215 after subtracting 2436 from 2651.
Fetch the next digit (8) from the dividend, attach it to 215 and continue: 2158 / 406

Moving on to step 8:
406 can be fit into 2158 5 times, resulting in a remainder of 128.
The next digit of our result is 5. 
Result so far: 163465.0
Deduct 2030 from 2158 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 9:
406 can be fit into 1280 3 times, resulting in a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 163465.3
The remainder is 62 after subtracting 1218 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 10:
The number 406 fits into 620 1 times, leaving a remainder of 214.
Put 1 as the next digit of the answer. 
Result so far: 163465.31
Subtracting 406 from 620 leaves us with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Step 11:
406 goes into 2140 5 times with a remainder of 110.
The number 5 becomes the next digit in our result. 
Result so far: 163465.315
Subtract 2030 from 2140 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 12:
1100 divided by 406 is 2 with a remainder of 288.
Put 2 as the next digit of the answer. 
Result so far: 163465.3152
Subtract 812 from 1100 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 13:
406 can be fit into 2880 7 times, resulting in a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 163465.31527
Deduct 2842 from 2880 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 14:
The number 406 fits into 380 0 times, leaving a remainder of 380.
Use 0 as the next digit of our solution. 
Result so far: 163465.31527
Subtracting 0 from 380 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 15:
3800 divided by 406 is 9 with a remainder of 146.
Write down 9 as next digit of the result. 
Result so far: 163465.3152709
The remainder is 146 after subtracting 3654 from 3800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Going ahead to step 16:
The number 406 fits into 1460 3 times, leaving a remainder of 242.
Write down 3 as next digit of the result. 
Result so far: 163465.31527093
If we take 1218 away from 1460, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

The final outcome is 163465.31527093, with a leftover of 2.42e-07.