A baker bakes 5 loaves of bread an hour in one oven. He has 4 ovens. From Monday to Friday, he bakes for 5 hours, but on Saturday and Sunday, he only bakes for 2 hours. How many loaves of bread does the baker bake in 3 weeks?
In an hour, the baker bakes 5 x 4 = 
<gadget id="calculator">5*4</gadget>
<output>20</output>
20 loaves of bread.
From Monday to Friday, he bakes 5 x 20 = 
<gadget id="calculator">5*20</gadget>
<output>100</output>
100 loaves of bread per day.
From Monday to Friday, he bakes a total of 100 x 5 = 
<gadget id="calculator">100*5</gadget>
<output>500</output>
500 loaves of bread.
On Saturday and Sunday, he bakes 2 x 20 = 
<gadget id="calculator">2*20</gadget>
<output>40</output>
40 loaves of bread per day.
On Saturday and Sunday, he bakes a total of 40 x 2 = 
<gadget id="calculator">40*2</gadget>
<output>80</output>
80 loaves of bread.
In a week, he bakes 500 + 80 = 
<gadget id="calculator">500+80</gadget>
<output>580</output>
580 loaves of bread.
In 3 weeks, he bakes 580 x 3 = 
<gadget id="calculator">580*3</gadget>
<output>1_740</output>
1740 loaves of bread.

<result>1_740</result>