Round formula including multiply by zero produces rounded amount

[Thisyearsman]

Can someone explain why

=ROUND(F19 +0.15(F16-F15),0) is equal to F19 when (F16-F15) is equal to zero?

As a matter of fact I can replace 0.15 with any number (plus or minus) and the formula still gives F19 as the answer.

However, if I take the 0.15 out of the formula the result is 0 just as you would expect.

[NBVC]

there is an operator missing after the 0.15 and the (F16-F15). If the operator should be * (mulitplication), then 0.15*0 is 0 and so result is F19 rounded to 0 decimals...

[Thisyearsman]

You are correct about the missing operator and you are also correct about the solution.

Thanks for helping me see the obvious that somehow was escaping me!