We look at the division of 66390202 by 419 
Let's see how many times 419 fits into 66390202.

Moving on to step 1:
The number 419 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 419

Advancing to step 2:
If we divide 66 by 419, we get 0 and a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Take the next digit (3) from the dividend and append it to 66, then repeat: 663 / 419

Let's proceed to step 3:
If we divide 663 by 419, we get 1 and a remainder of 244.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 419 from 663, we get 244.
Include the next digit (9) from the dividend after 244, then repeat: 2449 / 419

Step 4:
If we divide 2449 by 419, we get 5 and a remainder of 354.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 2095 away from 2449, we end up with 354.
Take the next digit (0) from the dividend and append it to 354, then repeat: 3540 / 419

Step 5:
419 can be fit into 3540 8 times, resulting in a remainder of 188.
The number 8 becomes the next digit in our result. 
Result so far: 158.0
If we subtract 3352 from 3540, we get 188.
Append the next digit (2) from the dividend to 188 and continue with: 1882 / 419

Advancing to step 6:
When dividing 1882 by 419, we get 4 with a remainder of 206.
Use 4 as the next digit of our solution. 
Result so far: 1584.0
Deduct 1676 from 1882 and we're left with 206.
Grab the next digit (0) from the dividend, add it to 206, then carry on: 2060 / 419

Moving on to step 7:
When dividing 2060 by 419, we get 4 with a remainder of 384.
Record the quotient 4 as the next digit in the result. 
Result so far: 15844.0
Subtract 1676 from 2060 to get 384.
Bring next digit (2) of the dividend behind the 384 and repeat the process: 3842 / 419

Let's proceed to step 8:
419 can be fit into 3842 9 times, resulting in a remainder of 71.
The next digit of our result is 9. 
Result so far: 158449.0
If we take 3771 away from 3842, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
If we divide 710 by 419, we get 1 and a remainder of 291.
Use 1 as the next digit of our solution. 
Result so far: 158449.1
If we take 419 away from 710, we end up with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Advancing to step 10:
When dividing 2910 by 419, we get 6 with a remainder of 396.
Put 6 as the next digit of the answer. 
Result so far: 158449.16
The remainder is 396 after subtracting 2514 from 2910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Advancing to step 11:
If we divide 3960 by 419, we get 9 and a remainder of 189.
Put 9 as the next digit of the answer. 
Result so far: 158449.169
Deduct 3771 from 3960 and we're left with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Advancing to step 12:
If we divide 1890 by 419, we get 4 and a remainder of 214.
Record the quotient 4 as the next digit in the result. 
Result so far: 158449.1694
Subtract 1676 from 1890 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Advancing to step 13:
When dividing 2140 by 419, we get 5 with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 158449.16945
Subtracting 2095 from 2140 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 14:
450 divided by 419 is 1 with a remainder of 31.
The next digit of our result is 1. 
Result so far: 158449.169451
Deduct 419 from 450 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 15:
310 divided by 419 is 0 with a remainder of 310.
Record the quotient 0 as the next digit in the result. 
Result so far: 158449.169451
The remainder is 310 after subtracting 0 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Step 16:
If we divide 3100 by 419, we get 7 and a remainder of 167.
The next digit of our result is 7. 
Result so far: 158449.16945107
Deduct 2933 from 3100 and we're left with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

The final outcome is 158449.16945107, with a leftover of 1.67e-07.