private int simpleValue = 200;
findViewById(R.id.up).setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v) {
                if (simpleValue <=20 && simpleValue > 0)
                {
                    simpleValue = simpleValue - 2;
                }
               else
                {
                    simpleValue = simpleValue - 20;
                }
                mEditor.putInt("value", simpleValue).apply();
                double dely = 1/(simpleValue*0.001*2);
                String formattedDouble = String.format("%.2f", dely);
                Toast.makeText(MainActivity.this, "Переменная= " + formattedDouble, Toast.LENGTH_SHORT).show();
            }
        });

        findViewById(R.id.up).setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch(event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        if (simpleValue <=20 && simpleValue > 0)
                        {
                            simpleValue = simpleValue - 2;
                        }
                        else
                        {
                            simpleValue = simpleValue - 20;
                        }
                        break;
                }
                mEditor.putInt("value", simpleValue).apply();
                double dely = 1/(simpleValue*0.001*2);
                String formattedDouble = String.format("%.2f", dely);
                 Toast.makeText(MainActivity.this, "Переменная= " + formattedDouble, Toast.LENGTH_SHORT).show();
                return false;
            }
        });