问题描述：
| 用递等式计算，（写出必要的计算过程，能简便的要简便计算）3.76+6.24×0.5 | 73×1.61-1.61+1.61×28 |
| 32.84-5.77-12.84-3.23 | 18.3÷6.1+2.4×2.25 |
| 1.66÷0.25 | [0.87÷（0.09+0.2）+2.4]÷0.54 |
最佳答案：
（1）3.76+6.24×0.5=3.76+3.12=6.88；（2）73×1.61-1.61+1.61×28=1.61×（73-1+×28）=1.61×100=161；（3）32.84-5.77-12.84-3.23=（32.84-12.84）-（5.77+3.23）=20-9=11；（4）18.3÷6.1+2.4×2.25=3+5.4=8.4；（5）1.66÷0.25=1.66÷0.25÷4×4=1.66÷（0.25×4）×4=1.66÷1×4=1.66×4=6.64；（6）[0.87÷（0.09+0.2）+2.4]÷0.54=[0.87÷0.29+2.4]÷0.54=[3+2.4]÷0.54=5.4÷0.54=10．