In the four formulas of "2*2=92", "7*7=57", "5+9=7", and "9*2=60", the operation symbols are the same as our commonly used calculations, and the carry is also full decimal One, it's just that each number is different from our commonly used counting method. For example: "2" in the current formula may represent our 0 or 1, 2, 3.... According to this writing method "5+6+7="how much"".
在"2*2=92"、"7*7=57"、"5+9=7"、"9*2=60"四个算式中运算符号与我们常用的计算相同，进位也是满十进一，只是每个数字与我们常用的计法不同．如：现在算式中的"2"也许代表我们的0或者1、2、3…．按照这个写法"5+6+7="多少""．
<result>0</result>