680+(1025×5)=680+5125=5805. (3024×6)-830=18144-830=17314. (6080×5)-6307=30400-6307=24093. (2601×4)+1820=10404+1820=12224. (826×8)-230+162=6608-230+162=6378+162=6540. 8360-(480×9)+369=8360-4320+369=4040+369=4409. (5830×3)-1046+83=17490-1046+83=16444+83=16527