Is there ways to calculate it?

According to : https://blockchain.info/charts/hash-rate

The Hashrate per second is 7,700,000 ~ 8,000,000 Terahash/second

With 12.5 Bitcoin/Block reward, 10 Minute Block Time , results 1800 BTC Mined/Day

Based on current price, around $6,500,000 ~ $7,000,000 in BTC is mined.

1) How could i calculate how much is spent in electricity / day?

2) Is the current Reward in Bitcoin - Electricity Price of mining = Positive profit?

Thanks