Here in this video from 15:14 Arvin Ash demonstrates a quantum-full-adder circuit, he goes on further to illustrate how it can perform multiple operations simultaneously via superposition. I took some screenshots asper:
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I have no issues with the concept of multiple operations being performed simultaneously but how would measurement make sense here (since we have a superposition of all states of the simultaneously performed additions).

Here's what I mean, for example with Grover's search algorithm we are interested in isolating a single state from a superposition of multiple states, from the video it seems to me we are interested in isolating multiple states from a superposition of multiple states. Since qubits collapse only to a single state after measurement, How would measurement here yield multiple states or is there a work around?