According to the Wikipedia article about Danegeld, in the year 1012, the English "bought off" the Vikings with 17,900 kg of silver. Similarly large sums of silver were taken in other years.

What did the Vikings do with all this silver back in Denmark? Wouldn't the influx of this huge sum of silver just cause massive inflation without an accompanying increase in production of goods that they could spend it on?

And where did the English farmers manage to find all this silver to pay the Danegeld anyway?