340 + 450 + 660 + 550 = ( 340 + 660) +( 450 + 550) = 1000 + 1000 = 2000
1240 +1510 + 2760 + 8490 = (1240 + 2760) + ( 1510 + 8490) = 4000 + 10000 = = 14000
2312 + 4646 + 3688 + 5354 = (2312 + 3688) + (4646 + 5354) = 6000 + +10000 = 16000
73 + 126 + 27 = (73 + 27) + 126 = 100 + 126 = 226
14 + 319 + 86 = ( 14 + 86) + 319 = 100 + 319 = 419
46 + 899 + 54 = (46 + 54) + 899 = 100 + 899 = 999