example:
you wanted to give your friend $50 and what you did was giving him 10x $1 bills + 2x $100 bills and 1x $1000 bill and he took the $50 out of the total and gave you back a $1160 bill
in other words when you want to sent 0.1BTC you don't need to select all the 812 inputs. either let the wallet choose automatically (based on privacy or priority which can be changed in settings) or select outputs to spend as much as it only covers the amount+fee not more.
you are spending ~3.7BTC to send 0.1BTC!!!
Yeah, you should be able to send .1 with much less fees. Just don't use all your inputs when you are sending the transaction.
If you are running the latest version of Electrum, you can choose which inputs to use from the Coins tab and select fewer inputs which should allow a smaller fee.