Study the given pie-chart and answer the question that follows.
The pie-chart represents the consumption offuel (in million litres) by various modes of transport of a country X in the year 2015. The total consumptionof fuel by various modesoftransport of the country is 800 million litres.
(The data shown here is only for mathematical exercise. They do not represent the actual figures of the country.)

To obtain fuel, energy is required to run the machinery, which is to be produced by burning coal.
If 1 tonne of coal is bumt to produce 0.4 million litres of oil, then approximately what is the requirement of coal (in tonnes) for the Trains sector?