Q1. Turn An Led On for one point five second, Then off for three mini second, Repeatedly.

Q1. Turn An Led On for one point five second, Then off for three mini second, Repeatedly. - Wokwi ESP32, STM32, Arduino Simulator

// Q1. Turn An LED on For One Point 1.5sec , Then Turn Off for 3milisec , Repeatedly.
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
digitalWrite(LED_BUILTIN, HIGH);
  delay(1500);
digitalWrite(LED_BUILTIN, LOW);
  delay(300);
}