其它
Which expression has the same result as $1+2+3+4+2+4+6+8+3+6+9+12+4+8+12+16$? 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers
$(1+2+3+4)\times 1+(1+2+3+4)\times 2+(1+2+3+4)\times 3+(1+2+3+4)\times 4=(1+2+3+4)\times (1+2+3+4)$ 