6．计算各题，能简便运算的写出主要过程．
0 164553 164561 164567 164571 164577 164579 164583 164589 164591 164597 164603 164607 164609 164613 164619 164621 164627 164631 164633 164637 164639 164643 164645 164647 164648 164649 164651 164652 164653 164655 164657 164661 164663 164667 164669 164673 164679 164681 164687 164691 164693 164697 164703 164709 164711 164717 164721 164723 164729 164733 164739 164747 199269
| 36×（$\frac{1}{4}+\frac{1}{6}+\frac{1}{9}$） | （$\frac{1}{3}+\frac{1}{4}-\frac{1}{24}$）×24 | $\frac{3}{5}×\frac{2}{5}+\frac{2}{5}÷1\frac{1}{2}$ |
| [1-（$\frac{1}{4}+\frac{3}{8}$）]÷$\frac{1}{4}$ | $\frac{3}{65}$×66 | $\frac{7}{8}-\frac{2}{3}×\frac{5}{8}$． |