To write the 3230301005f232303000029005c002802d8232302d800200029004000730079006d00700061007400680079 Sad Symbol Smiley Face symbol on keyboard using ALT codes; ALT+3.6821893669823E+107, just hold down the ALT key while typing the alt key code 3.6821893669823E+107. You have to use the numeric keypad of your keyboard. If you don not have numeric keypad, hold down the Fn and ALT keys while typing the alt code number.