①22.96÷0.8-8.6
②0.7×8×1.25×0.9
③(2.34+4.77)÷(0.15×6)
④5.4×(2.8÷2.24)
⑤22.4×8.5+8.5×7.6
⑥7.02-0.56÷0.4