166270 divided by 78 
Let's see how many times 78 fits into 166270.

Step 1:
78 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 78

Going ahead to step 2:
The number 78 fits into 16 0 times, leaving a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 78

Advancing to step 3:
The number 78 fits into 166 2 times, leaving a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 156 from 166 and we're left with 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 78

Step 4:
If we divide 102 by 78, we get 1 and a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 78 from 102 leaves us with 24.
Bring next digit (7) of the dividend behind the 24 and repeat the process: 247 / 78

Advancing to step 5:
If we divide 247 by 78, we get 3 and a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 213.0
If we take 234 away from 247, we end up with 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 78

Going ahead to step 6:
130 divided by 78 is 1 with a remainder of 52.
The next digit of our result is 1. 
Result so far: 2131.0
The remainder is 52 after subtracting 78 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 7:
When dividing 520 by 78, we get 6 with a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 2131.6
Subtract 468 from 520 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 8:
78 goes into 520 6 times with a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 2131.66
Subtract 468 from 520 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 2131.66 with a remainder of 0.052.