Calculate Unit Per Day - Team 6

CalUnit.java

public int calUnit() {
		BigDecimal power = new BigDecimal(this.power);
		BigDecimal duration = new BigDecimal(this.duration);
		BigDecimal result =  power.divide(new BigDecimal("1000.00")).multiply(duration);
		String ans = result.setScale(0,BigDecimal.ROUND_UP).toString();
		return Integer.parseInt(ans);
	}