89+53+47 436+37+64+163
38+513 264+(73+37) 187+42+158 513+38(264+73)+37 187+(42+158)364+78+154 78+(364+154)
49999+4999+499+49+4
9+99+999+9999+99999+999999+6
350 + 183 + 117
148 + 265 + 152 + 245
321 +(145 + 179)
698 - 281 - 19