Measure delivers huge unexpected numbers

[Triathlonboy]

I am brand new to Power BI.

When calculating a new measure in an activity based costing model that I am building, it is returning a huge number. Can anyone help with this? The measures have worked well for all of the other totals that I am using in other sheets as below:

Can anyone help out here please?

Thanks!

[HotChilli]

I'm sure a book will help you.

In the meantime, is MM a calculated column or a measure?

[amitchandak]

@Triathlonboy , Multiplication need to be done either at row level or at some group by and rollup

example using common dimension

Sumx(Values(DIm[Dim ID]) , calculate( Sum(Table[V1]) *Sum(Table2[V2]) * SUm(Table3[V3]) )  )

[Triathlonboy]

Hi,

This response does not make any sense to me sadly, I think I need to buy a book!

Thanks

Ian