6.脱式计算(能简算的要简算)
0 156538 156546 156552 156556 156562 156564 156568 156574 156576 156582 156588 156592 156594 156598 156604 156606 156612 156616 156618 156622 156624 156628 156630 156632 156633 156634 156636 156637 156638 156640 156642 156646 156648 156652 156654 156658 156664 156666 156672 156676 156678 156682 156688 156694 156696 156702 156706 156708 156714 156718 156724 156732 199269
(6.5÷5+22.7)×0.75 | $\frac{15}{7}$-($\frac{4}{9}$+$\frac{1}{7}$)-$\frac{5}{9}$ | 1$\frac{3}{5}$×$\frac{3}{8}$+$\frac{5}{6}$÷$\frac{5}{6}$ |
(7-7÷19)×$\frac{38}{77}$ | 9÷[3-($\frac{4}{5}$+$\frac{9}{20}$)] | 2.4×125 |