英语阅读难题,外国人+高手进!

英语阅读难题,外国人+高手进!
Charlie ran into a grocery one day with a shopping list in his hand.
"Hello,Mr Smith,"he said,"Iwant thirteen pounds of coffee at 32 cents."
"Very good"said the grocer,And he noted down the sale.
"Anthing else,Charlie?"
"Yes.Twenty-seven pounds of sugar at 9 cents."
"The loaf,eh?"And what else"
"Seven and a half pounds of beef at 20 cents."
"That will he a good brand.Go on."
"Five pounds of tea at 90 cents,eleven and a half of pints of molasses at 8 cents a pint,two eight-pound harms at 21 cents."
The grocer made out the bill.
"It is a big order,"he said,"did your mother tell you to pay for it?"
"My mother had nothing to do with this business.It is my arithmetic lesson and I had to get it done somehow,"said Charlie,as he quickly put the neat and accurate bill._____dollars_______cents.Will he pay for the bill?Why?________________________________
帮我填上画线部分,(打的我好辛苦啊T_T)
明确的答案最好用中文解释一下为什么