(145+620:31)*(3070-2*34)+5001*306
1.145+20=165 2.3070-68=3002 3.5001*306=1530306 4.165*3002=495330 5.1530306+495330=2025636
(145+620:31)*(3070-2*34)+5001*306=2025636 620:31=20 145+20=165 2*34=68 3070-68=3002 5001*306=1530306 165*3002=495330 495330+1530306=2025636