Divide By Zero Error

I'm getting a divide by zero error notification when using the code below on a text box in my power app. Incidentally, the calculation actually shows the correct result; the error is shown in a standard notification banner. If I switch the divide operator to an ampersand to simply connect the values, each value shows as a whole number (and not zero), so this error should not be occurring.

Any ideas?

Sum(
Filter('Dataset', Record.Value = recordID.Text),
'Value A'
)

/

(
  Sum(
  Filter('Dataset', Record.Value = recordID.Text),
  'Value A'
  )

+

  Sum(
  Filter('Dataset', Record.Value = recordID.Text),
  'Value B'
  )
)