How many days after Le Thanh Tong formally launched his attack did he follow with another Vietnamese army consiting of 150000 men?
return Le Thanh Tong formally launched his attack ;return Le Thanh Tong did follow with another Vietnamese army consiting of 150000 men ;return when  was  #1 ;return when  was  #2 ;return difference of #4 and  #3 in  days
['select', 'select', 'project', 'project', 'arithmetic']