(39000+530*400):100=? 54000-840*300:100=? 5264:7*30=? 4384:8*50=?
(39000+530*400):100=(39000+212000):100=251000:100=2510
54000-840*300:100=54000-252000:100=54000-2520=51480
5264:7*30=752*30=22560
4384:8*50=548*50=27400
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(39000+530*400):100=(39000+212000):100=251000:100=2510
54000-840*300:100=54000-252000:100=54000-2520=51480
5264:7*30=752*30=22560
4384:8*50=548*50=27400