If a real number is multiplied by 000 the product is always 0.0.0.
Thus, any expression, no matter how many terms, multiplied by 000 is equal to 0.0.0. (a+29−3b+12⋅xy0.24)⋅0=0 \left(a+29-3b+12\cdot\frac{xy}{0.24}\right)\cdot0=0 (a+29−3b+12⋅0.24xy)⋅0=0