First: verify the input
Count ten unique cards. Check every suit as well as every rank. A misplaced suit can remove a run without changing the visible point value, so a plausible total is not enough evidence that the input is right.
Second: inspect the chosen melds
Trace each displayed set and run back to the input. Place a small mark by the cards you have used. No mark should be needed twice. If another arrangement also gives the same minimum, the tool may display just one of them.
Third: count what remains
Add only the listed deadwood cards. Aces are one, numeral cards keep their pip value, and faces are ten. Compare this manual sum with the large result. A zero means all ten cards are covered in this static arrangement.
Keep the question narrow
Save your question as cards plus the result you expected. “I thought the run and the set could share this seven” is easier to resolve than “the total looks wrong.” Use sets and overlaps to test that exact misunderstanding.