A stat which means very little, since without American arms and supplies the Russians could not have mounted a counteroffensive, and without the continual degradation of German industrial capacity owed to constant Allied bombing, the Russian counteroffensive could not possibly have been successful.
Too many people overestimate the value of Russian canon-fodder, and underestimate the value of multiple second fronts prosecuted by the Allies, as well as Hitler's gross incompetence as a strategist. He need not have suffered anywhere near the scale of losses had he not insisted on a no-retreat policy, which prompted disasters like the destruction of his entire Sixth Army; or slaughtered all of his slave labor with his idiotic racialist theories.
“Your decision, Mr. President, to grant the Soviet Union an interest-free loan to the value of $1,000,000,000 to meet deliveries of munitions and raw materials to the Soviet Union is accepted by the Soviet Government with heartfelt gratitude as vital aid to the Soviet Union in its tremendous and onerous struggle against our common enemy-bloody Hitlerism.”
Joesph Stalin
After Roosevelt gave Stalin arms and supplies during WWII the Soviets repaid the U.S. by supplying arms, supplies and technical aid, even pilots and KGB interrogators to North Vietnam for use against our troops.
http://alphahistory.com/vietnam/chinese-and-soviet-involvement/