Element-wise multiplication of two operands.
Left and right opererands are required to have the same resolution.
The output dataset will have a unit that follows the following algebra:
Unit algebra (commutative):
kW * SEK_per_kW = SEK
kWh * SEK_per_kWh = SEK
kW * hours = kWh
% * any = same as the other operand (dimensionless scaling)
"multiply"