It's still zero.
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That depends on what you want to round it to, like one decimal place or a whole number, as in the following examples: One decimal place: 1.7 A whole number: 2
It already is rounded to one decimal place.
The '9' is in the "first decimal" place and the '3' is in the "second decimal" place.Rules for roundingIf the number in the second decimal place is 5 or greater then the number in the first decimal place is rounded upwards by 1.If the number in the second decimal place is 4 or less then the number in the first decimal place is left unchanged.As the problem in this case is 3.93 and the number in the second decimal place is less than 5, we end up with3.9 "correct to one decimal place" or "rounded to one decimal place".
To get the decimal, divide the numerator of the fraction by the denominator. If the decimal runs to more than one place, then you have to round it to one decimal place.
Since 54 is an integer, there is no need to round it to any number of decimal places.