Rules_Jioe
"7,874,228,996,577x53,277,788=4.19521503E20,7x7=49,4x9=36,7x4=28,8x3=24,28x24=672,9x6=54,7x4=28,4x1=4,5x4=20,53,277,996,577x672=35,802,673,53,277,996,577x7,874,228,996,577=2.8191845E23,2.8191845E23x4.19521503E20=1.18270873E50!!?"//suy nghĩ//