PAK vs BANG and the DL Method?

Bangladesh managed 225/8 before being forced off the pitch by rain at 48.2 overs. This means they scored at 4.65 runs per over. Can anyone tell me why Pakistan were then required to score 158 runs from 25 overs (at 6.32 runs per over) to win??!! I read the scorecard and it says Pakistan won by 10 . But they actually smoked Bangladesh. I thought I understood the DL method but this seems to make no sense at all...