解决问题是警察的职责所在，因此当一位小女孩寻求帮助，想要解决她的数学作业难题时，他们很乐意帮忙。
Police are used to problem solving, so when a little girl reached out and asked for some help with her maths homework, they were happy to help.
莱娜·德拉珀今年10岁，她在脸书上给当地的警察局发了信息，说明自己的作业遇到了困难。
Ten-year-old Lena Draper sent a Facebook message to her local police department explaining she was having a bit of trouble with her homework assignment.
B.J.格鲁伯少尉并没有让她找父母或者老师帮忙，对于女孩的请求，他很简练的回复道：“难题是什么？”
Instead of pointing her in the direction of her teacher, or her parents, Lt. B.J. Gruber decided to respond to her plea for help with a simple: "Ok with what?"
急切的莱娜立刻分享了自己的难题：（8+29）x15，随后她收到了很有用的解题窍门：“先算括号里面的数字，实际上就是37x15。”
Eager Lena quickly shared the offending question (8+29)x15 and was given this helpful tip: "Do the numbers in the parenthesis first so in essence it would be 37 x 15."
莱娜意识到自己碰到了好事，于是借此机会又提出了另一个问题：(90+27)+(29+15)x2。
Lena, realising she was on to a good thing, took the chance to pose another problem, this time (90+27)+(29+15)x2.
格鲁伯少尉很自信，他可以解决这个难题。他很乐意的再一次提供了帮助，回复了他认为的正确答案。
Lt. Gruber was confident. He had this. Again happy to help, he responded with what he thought was the right answer.
真是一位英雄啊……除了一点小瑕疵--那就是他的答案是错误的。当妈妈莫莉将二者的交流分享在脸书上后，有朋友立刻指出他给莱娜的答案不正确。
What a hero....except there was one tiny issue. He was wrong. The answer he'd given to Lena ended up being incorrect, a fact quickly pointed out by family friends when mum Molly shared the exchange on Facebook.
事实上应该是先将第二个括号里的数字相加，然后只将第二个括号算出的数字乘以2，然后再与第一个括号里的数字相加。
The actual answer is to add the numbers in the second parentheses and multiply that answer - and that alone - by two, then add it to the numbers in the first parentheses.
羞愧的格鲁伯少尉在马里昂警察局的脸书主页上写道：“如果你对于警察局的数学能力有所担忧，放心吧。”
"If you're worried about the police department's mathematical abilities, stand down," The red-faced Lt. Gruber took to the Marion Police Department's Facebook page to explain.
“希望这是算得出来的真正的'答案'，因为显然我算不出来！”他开玩笑道。“尤其是虽然我的答案不正确，但是莫莉承认了我们确实是想帮助她女儿做数学作业，这很好。”
"Hoping it is truly the thought that counts since apparently I cannot!" he joked. "Especially since the answer was wrong, it was very nice for Molly to acknowledge our attempt to help her daughter with some math homework."