#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

float mL_imp = 9.009;     //  koef      (ml / 1 imp)
float doza   = 9876.321;  //  max DOZA  (litr)
uint32_t kol_imp = 0;     // кол-во имп-в соотв DOZA
char buf_ml_imp[9];
char buf_doza[9];

void setup() {
  lcd.init();  lcd.backlight();
  lcd.clear();
  // buf_ml_imp = '00000000';
  dtostrf(mL_imp, 8, 3, buf_ml_imp);
  int i = strlen(buf_ml_imp);
  lcd.setCursor(0,0);  lcd.print("mL_imp = ");  lcd.print(i);
  lcd.setCursor(0,1);  lcd.print(buf_ml_imp);
  delay(1000);

  lcd.clear();
  dtostrf(doza, 8, 3, buf_doza);
  i = strlen(buf_doza);
  lcd.setCursor(0,0);  lcd.print("doza = ");  lcd.print(i);
  lcd.setCursor(0,1);  lcd.print(buf_doza);
  delay(1000);

  //float b_doza = doza / mL_imp ;
 
  kol_imp = trunc(1000.0 * (doza / mL_imp));
 
  lcd.clear();
  //dtostrf(doza, 8, 3, buf_doza);
  //i = strlen(buf_doza);
  lcd.setCursor(0,0);  lcd.print("kol_imp = ");
  lcd.setCursor(0,1);  lcd.print(kol_imp);
}
void loop(){

}