456+782 1025+6487 95104+36513 999+4825451 15+16+17+18 96101﹣34569 .
计算: 9999×2222+3333×333496%×25+0.75+0.256666×8888÷(4444×3333)
简便计算 125×64﹣24×64﹣6419+21+23+…+49+51 (25+19)×499999×26+33333×22 25×125×32 102×88 9000÷25÷4 99×46.
简算: 3.14×9919.25﹣0.47﹣8.531.25×0.03×8720÷45.
470÷2.5÷40.
0.8××1.25×4.