Joseph gave 23 cards to each of his 15 students and had 12 cards left. How many cards did Joseph have at first? Let's think step by step and output the final answer after "####".
user
He gave 23 cards each to 15 students for a total of 23*15 = <<23*15=345>>345 cards
He has 12 cards left, so originally the number of cards was 345+12 = 357 cards
#### 357
Joseph gave 23 cards to each of his 15 students and had 12 cards left. How many cards did Joseph have at first?
train