Laura Hall is preparing the materials purchases budget for the first quarter. The production manager has proviue production budget information: January $-64100$ units, February $-57800$ units, March $-51000$ units. Each unit requires $6$ gallons of direct materials, and Laura wants to maintain an ending inventory equal to $10\%$ of the next month's production needs. How many gallons will Laura budget to purchase in February?

$354660$

$342720$

$346800$