LCD Help.

This should get you pretty close to what you want.

int val[10];               // variable used to store data from serial port
int ByteCount = 0;

void setup() {
  Serial.begin(9600);         // connect to the serial port
  Serial.println("Arduio Online");
}

void loop() {
  if (Serial.available() > 0) {
    delay(100);
    while (Serial.available() > 0) {
      ByteCount ++;
      val[ByteCount] = Serial.read();
    }
  }
  
  if (ByteCount > 0) {
    for (int i = 1; i <= ByteCount; i++) {
      if (val[i] >= '0' && val[i] <= '9' ) {
        val[i]= val[i] - '0';
        Serial.print(val[i]);
      }
    }
    Serial.println();
    ByteCount = 0;
  }
}