Step 1: Set up the problem
            
        
        
        T
                O
            
                    4
                    3
                    1
                
                
                    0
                    10
                
            -
                
                    2
                
                
                    7
                
            
                    1
                
                
                    3
                
            Click 'Next' to start learning subtraction with regrouping step by step!