如何将两个链表相乘成第三个链表？

class ListNode:
    def __init__(self, val=0, next=None):
        self.val = val
        self.next = next

def multiply_lists(l1, l2):
    result = ListNode(0)
    curr = result

    while l1:
        carry = 0
        l2_curr = l2

        while l2_curr:
            value = l1.val * l2_curr.val + carry
            carry = value // 10
            value %= 10

            if not curr.next:
                curr.next = ListNode(value)
            else:
                curr = curr.next
                curr.val += value

            l2_curr = l2_curr.next

        if carry > 0:
            curr.next = ListNode(carry)

        l1 = l1.next
        curr = result

    return result.next