`[` Tham Khảo `]`
`( 299/6 +1/2) xx 50 :2`
`= (299/6 + 3/6) xx 50 xx 1/2`
`= 302/6 xx 50 xx 1/2`
`=151/3 xx 50 xx 1/2`
`=7550/6`
`=3775/3`
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