Answer:
0.4 (not rounded)
Explanation
You can first reduce this fraction by dividing both the numerator and denominator by the Greatest Common Factor of 18 and 45 using
GCF(18,45) = 9
18÷945÷9=25
We know that
25
is the same as
2÷5
Then using
Long Division for 2 divided by 5
gives us
=0.4