计算下面各题，怎样简便就怎样计算。
$7.68 - 1.47 - 0.53$ $4.25\div2.5\times101 - 1.7$ $1.7\times[(1.3 + 2.15)\div0.6]$
$375\times99$ $6.32\times0.99 + 6.32\times0.01$ $(58.3 + 25.7)\div(160\times0.25)$
$31.6\div(7.9 - 5.4)\div0.4$ $0.4\times3.35\times25\times2$ $5.03\times[40\div(3.49 - 3.09)]$
$4.26\times13.5 - 42.6\times0.35$ $3.26\times101 - 3.26$ $3.75\div[0.3\times(1.34 - 0.84)]$
$303 - 102\div15 - 67$ $8\div0.64 - 1.7\times4.5$ $3.6\div[(17.5 + 1.22)\div0.26]$
$16.25 - 4.28 + 3.75 - 5.72$ $7.6\times27 + 7.6\times174 - 7.6$ $25.78 - (5.78 + 3.3\times0.3)$
$21.6\div8\div1.25$ $39\div(1.3\times5) - 4.84$ $1.36\times6.2 + 2.8\times1.36 + 1.36$
$12.5\times1.9 - 1.1\times12.5$ $12.2\div4 + 7.8\div4$ $9.4\div[(1.2 + 1.3)\div0.25]$
$2.7\div4.5 + 6.5\times0.48$ $12.5\times8.88$ $(10 - 18.98\div2.6)\times0.45$
$(4.44\div3.7 + 9.6)\div8$ $7.46 + 7.46\times99$ $4.7\times8.3 + 5.2\times8.3 + 0.83$
$28.7 - 0.81 - 18.7 - 7.19$ $105\div15\times68 + 167$ $1.5\times[4.59\div(3.2 - 2.75)]$
$10.4 - 9.6\times0.35 + 4.56$ $(16.4 - 11.9)\div2.5\div2$ $8.12 - [(0.74 - 0.26)\div0.8]$