You are multiplying that array with other arrays that produce either boolean values or (presumably) contain numbers, so when you multiply an array containing `TRUE/FALSE`

values the `TRUE`

values act like 1s and the `FALSE`

values like zeroes.

For example if I multiply two arrays like this:

`={TRUE,TRUE,FALSE,FALSE}*{TRUE,FALSE,TRUE,FALSE}`

the result is

`={1,0,0,0}`

or with this

`={TRUE,TRUE,FALSE,FALSE}*{1,2,3,4}`

I get the result

`={1,2,0,0}`

The result for your formula is the sum of the product of all values in E2:F3000 where the relevant row labels/column headers match A69/D69, multiplied by the relevant row in G2:G3000