The three e-commerce giants will offer their own coupons worth a total of 1.8 billion yuan, which may be used together with the government-issued vouchers.译文：三家电商企业匹配了总价值约（）亿元的消费券，消费者可将“武汉消费券”与3家企业的消费券叠加使用。（请大家填写数字即可）
The three e-commerce giants will offer their own coupons worth a total of 1.8 billion yuan, which may be used together with the government-issued vouchers.译文：三家电商企业匹配了总价值约（）亿元的消费券，消费者可将“武汉消费券”与3家企业的消费券叠加使用。（请大家填写数字即可）
正确答案：18