function Cul(form){
  form.ans.value = (eval(form.num1.value)*eval(form.num2.value)+eval(form.num3.value)+eval(form.num4.value)+eval(form.num5.value)+eval(form.num6.value))*eval(form.num7.value);
  return false;
} 


function Cul2(form){
  form.ans2.value = eval(form.num1.value)*eval(form.num2.value)+eval(form.num3.value)+eval(form.num4.value)+eval(form.num5.value)+eval(form.num6.value);
  return false;
} 


function Cul3(form){
  form.ans3.value = eval(form.num1.value)*eval(form.num2.value)*8+(eval(form.num4.value)+eval(form.num5.value))*eval(form.num7.value)+eval(form.num3.value)+eval(form.num6.value);
  return false;
} 

function Cul4(form){
  form.ans4.value = eval(form.num1.value)*eval(form.num2.value)*8/eval(form.num7.value)+eval(form.num3.value)+eval(form.num4.value)+eval(form.num5.value)+eval(form.num6.value);
  return false;
}