To make it easier,break it down first;35.5 also means 345/10(after the point,the number of digits is the number of 0’s behind the 1 that was used to divide a whole number.e.g;784.25=78425/100 e.t.c).
You can then make the divided by 15 which also means 15/1 to multiplication by reversing it to *1/15(an example is division of 17/4 reversed to multiplied by 4/17).Note;After reversing the sign would change from division to multiplication.
From there,we have an easier decimal;345/10*15/1=23/10 which is then equal to 2.3
