500
This is the last item Mama's gonna buy in "Hush, Little Baby"
What is horse and cart?
"Hush, little baby, don't say a word, Mama's gonna buy you a mockingbird. And if that mockingbird won't sing, Mama's gonna buy you a diamond ring. And if that diamond ring turns brass, Mama's gonna buy you a looking glass. And if that looking glass is broke, Mama's gonna buy you a billy goat. And if that billy goat won't pull, Mama's gonna buy you a cart and a bull. And if that cart and bull turn over, Mama's gonna buy you a dog named Rover. And if that dog named Rover won't bark, Mama's gonna buy you a horse and a cart. And if that horse and cart fall down, you'll still be the sweetest little baby in town."