579的平方乘以0.543543543.乘以9/1000
=579^2*543/999*9/1000
=335241*543/111/1000
=182035863/111/1000
=182035.863/111
=1639.9627297297...
579的平方乘以0.543543543.乘以9/1000
=579^2*543/999*9/1000
=335241*543/111/1000
=182035863/111/1000
=182035.863/111
=1639.9627297297...