1鼠标点选到c1的单元格中,输入公式“=a1*b1”,如图所示:mouse click to the cell c1, enter the formula "= a1 * b1", as shown:2从第二排单元格中开始输入你需要求积的数字,如图所示:from the second row of the cell start typing your request plot numbers, as shown:3将鼠标选中“c1”,然后当光标变成十字架形状的时候一直网下拉,如图所示:the mouse to select the "c1", and then when the cursor changes to a cross shape when the network has been pulled down, as shown:4放开鼠标,你就会发现,所有自动求积的计算就都已经完成了,如图所示:release the mouse, you will find that all calculations automatically quadrature on h**e been completed, as shown:end 20210311