计算，直接写答案。'J3|/Y.E
74×53＋47×74=1O5`*{7T3B.C9b9f/c8i-~5f'x'J3|/Y.E
2169–642–358=3D3A3v'J3|/Y.E
948＋1061＋52＋939=,_,R0I8a9K1n4\'J3|/Y.E
125×64=4g1I:O-_1u.M(k4X.s'J3|/Y.E
375＋137÷（69＋68）=-h,D6y.k.c7Z0h4A,n4}4E-['J3|/Y.E
2.5＋28.6＋0.73=;Z.}0Y1]8t,F+e-D+E9G7P6_6z'J3|/Y.E
5.06–（3.14＋0.4）=7Z.t.r6n*e/i/T;N*g8D4P2d8b5P;I.Y7I)A'J3|/Y.E
4900–20＋15×17=4f+S;G)w*U'J3|/Y.E