4.56+37+4.44+47 =4.56+4.44 + 37+47=9+84=93.23－九分之八×八分之三÷二十七分之一=23 - 3分之1×27=23- 9=14.3.07×101－3.07=3.07×（101-1）=3.07×100=307.8.92×7.9+2.1×8.92+28.9 =8.92×（7.9+2.1）+28.9=...8.92×7.9+2.1×8.92+28.99/10×5/9+4/9×9/10+9/10如上，已回答