#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

double e = 2.7182818284;

void setup() {
  lcd.init();
  lcd.backlight();

  lcd.setCursor(0, 0);
  lcd.print(e, 6);
  lcd.setCursor(0, 1);
  lcd.print(e, 10);
}

void loop() {

}