A limit order book is a compilation of all the available limit orders in the market for a specific stock at a specific time.The limit order book is basically the technology that underpins the NASDAQ market.

The following is the "top" of the limit order book for TESLA

Assume that the orders in the limit order book can be subdivided (this is technically not true)

Asks
Shares	Price
107	193.43
125	193.42
150	193.41
140	193.4
300	193.38
Bids
Shares	Price
100	193.35
110	193.34
200	193.33
100	193.32
50	193.31

What is the current bid-ask spread for TESLA? (express your answer in dollars without the dollar sign i.e 0.15 for 15 cents)

An investor wants to buy 400 shares of TESLA. What is the total that they will pay in dollars? (omit dollar sign) Assume that the orders in the limit order book can be subdivided (this is technically not true)