predicted values

Hello helpers

I fitted an SARIMA model to a time series and would like to 
predict 10 steps ahead. I made

dataset1.arima<-arima(dataset1.ts,order=c(2,1,0),seasonal=list

(order=c(1,1,0)))

predict(dataset1.arima,n.ahead=10)

The problem is that the predicted values came in a different 
scale. The original series has values like  26992411 and the 
predicted values are like -0.2341768144. Why is this?

thanks
luis
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