text: function bankBalance(arr) {
      let sum = 0;
      let index = 0;
  
      while (arr[index] != "NoMoreMoney") {
          arr[index] = Number(arr[index]);
  
          if (arr[index] > 0) {
              sum += arr[index];
              console.log(`Increase: ${arr[index].toFixed(2)}`);
          } else {
              console.log("Invalid operation!");
              break;
          }
  
          index++;
      }
  
      console.log(`Total: ${sum.toFixed(2)}`);
  }
  
  bankBalance(["5.51", "69.42", "100", "NoMoreMoney"]);
  bankBalance(["120", "45.55", "-150"]);