Partly, the answer depends on whether you are doing programming or doing math.
The divisor bar also carries implicit parentheses. The expression could properly and unambiguously be written
8÷[2(2+2)] so that 2(2+2) all appears under the divisor bar. Lacking easy graphics, I've used [] to indicate the implicit parentheses of the divisor bar.
In programming, the expression could be interpreted as
8/2*4.
Last edited by denton; 08/01/19.
