With a rental truck that has a 57-gallon gas tank and gets 9 mpg, you could expect to fill up the loaded U-Haul at least three times along the way (9 mpg x 57 gallon tank = 513 miles per tank and 1547 miles / 513 miles per tank = 3.01 tanks).
LC Means letter of Credit. It is a negotiable instrument to make payment through bankers of both parties, i.e. Payer & Payee.
A 'sight' LC means that payment is made immediately to the beneficiary/seller/exporter upon presentation of the correct documents in the required time frame. A 'time' or 'date' LC will specify when payment will be made at a future date and upon presentation of the required documents.