Преобразовать формулу в java из Excel

int k=10;
int w=10;
int a=10;
int b=10;
 
System.out.println((weight/kolvo<2?k*10:k*15) + (k*15!=0?(a*15+b*15):(a*10+b*10));

package com.example.deevilon.de_totorial_on;
 
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.RequiresApi;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import android.widget.SeekBar;
import android.widget.TextView;
 
import java.text.NumberFormat;
 
public class MainActivity extends AppCompatActivity {
 
    private static final NumberFormat fmt = NumberFormat.getNumberInstance ();
    private static final NumberFormat percentFormat = NumberFormat.getNumberInstance ();
 
    private double billAmount = 0.0;
    private double percent = 0;
    private TextView amountTextView;
    private TextView percentTextView;
    private TextView tipTextView;
    private TextView totalTextView;
 
    @RequiresApi(api = Build.VERSION_CODES.N)
    @Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        amountTextView = (TextView) findViewById(R.id.amountTextView);
        percentTextView = (TextView) findViewById(R.id.percentTextView);
        tipTextView = (TextView) findViewById(R.id.tipTextView);
        totalTextView = (TextView) findViewById(R.id.totalTextView);
        tipTextView.setText(fmt.format(0));
        totalTextView.setText(fmt.format(0));
 
        EditText amountEditText = (EditText) findViewById(R.id.amountEditText);
        amountEditText.addTextChangedListener(amountEditTextWatcher);
 
        SeekBar percentSeekBar = (SeekBar) findViewById(R.id.percentSeekBar);
        percentSeekBar.setOnSeekBarChangeListener(seekBarListener);
 
        }
private void calculate(){
        percentTextView.setText(percentFormat.format(0));
 
(вот тут по идее должна быть эта формула для подсчета)
 
        }
        };